diff --git a/CHANGES b/CHANGES
index 0250e4ef026b..f4230aaac031 100644
--- a/CHANGES
+++ b/CHANGES
@@ -7,6 +7,24 @@
  https://github.com/openssl/openssl/commits/ and pick the appropriate
  release branch.
 
+ Changes between 1.1.1e and 1.1.1f [31 Mar 2020]
+
+  *) Revert the change of EOF detection while reading in libssl to avoid
+     regressions in applications depending on the current way of reporting
+     the EOF. As the existing method is not fully accurate the change to
+     reporting the EOF via SSL_ERROR_SSL is kept on the current development
+     branch and will be present in the 3.0 release.
+     [Tomas Mraz]
+
+  *) Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1
+     when primes for RSA keys are computed.
+     Since we previously always generated primes == 2 (mod 3) for RSA keys,
+     the 2-prime and 3-prime RSA modules were easy to distinguish, since
+     N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
+     2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
+     This avoids possible fingerprinting of newly generated RSA modules.
+     [Bernd Edlinger]
+
  Changes between 1.1.1d and 1.1.1e [17 Mar 2020]
   *) Properly detect EOF while reading in libssl. Previously if we hit an EOF
      while reading in libssl then we would report an error back to the
diff --git a/NEWS b/NEWS
index eba6c3b6d93f..85470793b209 100644
--- a/NEWS
+++ b/NEWS
@@ -5,10 +5,16 @@
   This file gives a brief overview of the major changes between each OpenSSL
   release. For more details please read the CHANGES file.
 
+  Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
+
+      o Revert the unexpected EOF reporting via SSL_ERROR_SSL
+
   Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
 
       o Fixed an overflow bug in the x64_64 Montgomery squaring procedure
         used in exponentiation with 512-bit moduli (CVE-2019-1551)
+      o Properly detect unexpected EOF while reading in libssl and report
+        it via SSL_ERROR_SSL
 
   Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
 
diff --git a/README b/README
index 8e9ce75a335d..d7d44aa3a01b 100644
--- a/README
+++ b/README
@@ -1,7 +1,7 @@
 
- OpenSSL 1.1.1e 17 Mar 2020
+ OpenSSL 1.1.1f 31 Mar 2020
 
- Copyright (c) 1998-2019 The OpenSSL Project
+ Copyright (c) 1998-2020 The OpenSSL Project
  Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
  All rights reserved.
 
diff --git a/apps/rehash.c b/apps/rehash.c
index 2b769fbceb87..fc1dffe97497 100644
--- a/apps/rehash.c
+++ b/apps/rehash.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
  * Copyright (c) 2013-2014 Timo Teräs <timo.teras@gmail.com>
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
@@ -274,11 +274,19 @@ static int do_file(const char *filename, const char *fullpath, enum Hash h)
     if (x->x509 != NULL) {
         type = TYPE_CERT;
         name = X509_get_subject_name(x->x509);
-        X509_digest(x->x509, evpmd, digest, NULL);
+        if (!X509_digest(x->x509, evpmd, digest, NULL)) {
+            BIO_printf(bio_err, "out of memory\n");
+            ++errs;
+            goto end;
+        }
     } else if (x->crl != NULL) {
         type = TYPE_CRL;
         name = X509_CRL_get_issuer(x->crl);
-        X509_CRL_digest(x->crl, evpmd, digest, NULL);
+        if (!X509_CRL_digest(x->crl, evpmd, digest, NULL)) {
+            BIO_printf(bio_err, "out of memory\n");
+            ++errs;
+            goto end;
+        }
     } else {
         ++errs;
         goto end;
diff --git a/apps/s_server.c b/apps/s_server.c
index 2248a432e268..0ba75999fd28 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
  * Copyright 2005 Nokia. All rights reserved.
  *
@@ -1904,7 +1904,7 @@ int s_server_main(int argc, char *argv[])
         BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
 
         if (sdebug)
-            ssl_ctx_security_debug(ctx, sdebug);
+            ssl_ctx_security_debug(ctx2, sdebug);
 
         if (session_id_prefix) {
             if (strlen(session_id_prefix) >= 32)
diff --git a/crypto/bn/bn_local.h b/crypto/bn/bn_local.h
index 37228104c640..8ad69ccd3639 100644
--- a/crypto/bn/bn_local.h
+++ b/crypto/bn/bn_local.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -654,9 +654,6 @@ BIGNUM *int_bn_mod_inverse(BIGNUM *in,
                            const BIGNUM *a, const BIGNUM *n, BN_CTX *ctx,
                            int *noinv);
 
-int bn_probable_prime_dh(BIGNUM *rnd, int bits,
-                         const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
-
 static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
 {
     if (bits > (INT_MAX - BN_BITS2 + 1))
diff --git a/crypto/bn/bn_prime.c b/crypto/bn/bn_prime.c
index 6d74da26d3c7..d0cf3779fa50 100644
--- a/crypto/bn/bn_prime.c
+++ b/crypto/bn/bn_prime.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -22,10 +22,12 @@
 static int witness(BIGNUM *w, const BIGNUM *a, const BIGNUM *a1,
                    const BIGNUM *a1_odd, int k, BN_CTX *ctx,
                    BN_MONT_CTX *mont);
-static int probable_prime(BIGNUM *rnd, int bits, prime_t *mods);
-static int probable_prime_dh_safe(BIGNUM *rnd, int bits,
-                                  const BIGNUM *add, const BIGNUM *rem,
-                                  BN_CTX *ctx);
+static int probable_prime(BIGNUM *rnd, int bits, int safe, prime_t *mods);
+static int probable_prime_dh(BIGNUM *rnd, int bits, int safe, prime_t *mods,
+                             const BIGNUM *add, const BIGNUM *rem,
+                             BN_CTX *ctx);
+
+#define square(x) ((BN_ULONG)(x) * (BN_ULONG)(x))
 
 int BN_GENCB_call(BN_GENCB *cb, int a, int b)
 {
@@ -87,16 +89,11 @@ int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe,
  loop:
     /* make a random number and set the top and bottom bits */
     if (add == NULL) {
-        if (!probable_prime(ret, bits, mods))
+        if (!probable_prime(ret, bits, safe, mods))
             goto err;
     } else {
-        if (safe) {
-            if (!probable_prime_dh_safe(ret, bits, add, rem, ctx))
-                goto err;
-        } else {
-            if (!bn_probable_prime_dh(ret, bits, add, rem, ctx))
-                goto err;
-        }
+        if (!probable_prime_dh(ret, bits, safe, mods, add, rem, ctx))
+            goto err;
     }
 
     if (!BN_GENCB_call(cb, 0, c1++))
@@ -272,17 +269,18 @@ static int witness(BIGNUM *w, const BIGNUM *a, const BIGNUM *a1,
     return 1;
 }
 
-static int probable_prime(BIGNUM *rnd, int bits, prime_t *mods)
+static int probable_prime(BIGNUM *rnd, int bits, int safe, prime_t *mods)
 {
     int i;
     BN_ULONG delta;
     BN_ULONG maxdelta = BN_MASK2 - primes[NUMPRIMES - 1];
-    char is_single_word = bits <= BN_BITS2;
 
  again:
     /* TODO: Not all primes are private */
     if (!BN_priv_rand(rnd, bits, BN_RAND_TOP_TWO, BN_RAND_BOTTOM_ODD))
         return 0;
+    if (safe && !BN_set_bit(rnd, 1))
+        return 0;
     /* we now have a random number 'rnd' to test. */
     for (i = 1; i < NUMPRIMES; i++) {
         BN_ULONG mod = BN_mod_word(rnd, (BN_ULONG)primes[i]);
@@ -290,61 +288,25 @@ static int probable_prime(BIGNUM *rnd, int bits, prime_t *mods)
             return 0;
         mods[i] = (prime_t) mod;
     }
-    /*
-     * If bits is so small that it fits into a single word then we
-     * additionally don't want to exceed that many bits.
-     */
-    if (is_single_word) {
-        BN_ULONG size_limit;
-
-        if (bits == BN_BITS2) {
-            /*
-             * Shifting by this much has undefined behaviour so we do it a
-             * different way
-             */
-            size_limit = ~((BN_ULONG)0) - BN_get_word(rnd);
-        } else {
-            size_limit = (((BN_ULONG)1) << bits) - BN_get_word(rnd) - 1;
-        }
-        if (size_limit < maxdelta)
-            maxdelta = size_limit;
-    }
     delta = 0;
  loop:
-    if (is_single_word) {
-        BN_ULONG rnd_word = BN_get_word(rnd);
-
-        /*-
-         * In the case that the candidate prime is a single word then
-         * we check that:
-         *   1) It's greater than primes[i] because we shouldn't reject
-         *      3 as being a prime number because it's a multiple of
-         *      three.
-         *   2) That it's not a multiple of a known prime. We don't
-         *      check that rnd-1 is also coprime to all the known
-         *      primes because there aren't many small primes where
-         *      that's true.
+    for (i = 1; i < NUMPRIMES; i++) {
+        /*
+         * check that rnd is a prime and also that
+         * gcd(rnd-1,primes) == 1 (except for 2)
+         * do the second check only if we are interested in safe primes
+         * in the case that the candidate prime is a single word then
+         * we check only the primes up to sqrt(rnd)
          */
-        for (i = 1; i < NUMPRIMES && primes[i] < rnd_word; i++) {
-            if ((mods[i] + delta) % primes[i] == 0) {
-                delta += 2;
-                if (delta > maxdelta)
-                    goto again;
-                goto loop;
-            }
-        }
-    } else {
-        for (i = 1; i < NUMPRIMES; i++) {
-            /*
-             * check that rnd is not a prime and also that gcd(rnd-1,primes)
-             * == 1 (except for 2)
-             */
-            if (((mods[i] + delta) % primes[i]) <= 1) {
-                delta += 2;
-                if (delta > maxdelta)
-                    goto again;
-                goto loop;
-            }
+        if (bits <= 31 && delta <= 0x7fffffff
+                && square(primes[i]) > BN_get_word(rnd) + delta)
+            break;
+        if (safe ? (mods[i] + delta) % primes[i] <= 1
+                 : (mods[i] + delta) % primes[i] == 0) {
+            delta += safe ? 4 : 2;
+            if (delta > maxdelta)
+                goto again;
+            goto loop;
         }
     }
     if (!BN_add_word(rnd, delta))
@@ -355,16 +317,23 @@ static int probable_prime(BIGNUM *rnd, int bits, prime_t *mods)
     return 1;
 }
 
-int bn_probable_prime_dh(BIGNUM *rnd, int bits,
-                         const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx)
+static int probable_prime_dh(BIGNUM *rnd, int bits, int safe, prime_t *mods,
+                             const BIGNUM *add, const BIGNUM *rem,
+                             BN_CTX *ctx)
 {
     int i, ret = 0;
     BIGNUM *t1;
+    BN_ULONG delta;
+    BN_ULONG maxdelta = BN_MASK2 - primes[NUMPRIMES - 1];
 
     BN_CTX_start(ctx);
     if ((t1 = BN_CTX_get(ctx)) == NULL)
         goto err;
 
+    if (maxdelta > BN_MASK2 - BN_get_word(add))
+        maxdelta = BN_MASK2 - BN_get_word(add);
+
+ again:
     if (!BN_rand(rnd, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD))
         goto err;
 
@@ -375,27 +344,44 @@ int bn_probable_prime_dh(BIGNUM *rnd, int bits,
     if (!BN_sub(rnd, rnd, t1))
         goto err;
     if (rem == NULL) {
-        if (!BN_add_word(rnd, 1))
+        if (!BN_add_word(rnd, safe ? 3u : 1u))
             goto err;
     } else {
         if (!BN_add(rnd, rnd, rem))
             goto err;
     }
 
-    /* we now have a random number 'rand' to test. */
+    if (BN_num_bits(rnd) < bits
+            || BN_get_word(rnd) < (safe ? 5u : 3u)) {
+        if (!BN_add(rnd, rnd, add))
+            goto err;
+    }
 
- loop:
+    /* we now have a random number 'rnd' to test. */
     for (i = 1; i < NUMPRIMES; i++) {
-        /* check that rnd is a prime */
         BN_ULONG mod = BN_mod_word(rnd, (BN_ULONG)primes[i]);
         if (mod == (BN_ULONG)-1)
             goto err;
-        if (mod <= 1) {
-            if (!BN_add(rnd, rnd, add))
-                goto err;
+        mods[i] = (prime_t) mod;
+    }
+    delta = 0;
+ loop:
+    for (i = 1; i < NUMPRIMES; i++) {
+        /* check that rnd is a prime */
+        if (bits <= 31 && delta <= 0x7fffffff
+                && square(primes[i]) > BN_get_word(rnd) + delta)
+            break;
+        /* rnd mod p == 1 implies q = (rnd-1)/2 is divisible by p */
+        if (safe ? (mods[i] + delta) % primes[i] <= 1
+                 : (mods[i] + delta) % primes[i] == 0) {
+            delta += BN_get_word(add);
+            if (delta > maxdelta)
+                goto again;
             goto loop;
         }
     }
+    if (!BN_add_word(rnd, delta))
+        goto err;
     ret = 1;
 
  err:
@@ -403,70 +389,3 @@ int bn_probable_prime_dh(BIGNUM *rnd, int bits,
     bn_check_top(rnd);
     return ret;
 }
-
-static int probable_prime_dh_safe(BIGNUM *p, int bits, const BIGNUM *padd,
-                                  const BIGNUM *rem, BN_CTX *ctx)
-{
-    int i, ret = 0;
-    BIGNUM *t1, *qadd, *q;
-
-    bits--;
-    BN_CTX_start(ctx);
-    t1 = BN_CTX_get(ctx);
-    q = BN_CTX_get(ctx);
-    qadd = BN_CTX_get(ctx);
-    if (qadd == NULL)
-        goto err;
-
-    if (!BN_rshift1(qadd, padd))
-        goto err;
-
-    if (!BN_rand(q, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD))
-        goto err;
-
-    /* we need ((rnd-rem) % add) == 0 */
-    if (!BN_mod(t1, q, qadd, ctx))
-        goto err;
-    if (!BN_sub(q, q, t1))
-        goto err;
-    if (rem == NULL) {
-        if (!BN_add_word(q, 1))
-            goto err;
-    } else {
-        if (!BN_rshift1(t1, rem))
-            goto err;
-        if (!BN_add(q, q, t1))
-            goto err;
-    }
-
-    /* we now have a random number 'rand' to test. */
-    if (!BN_lshift1(p, q))
-        goto err;
-    if (!BN_add_word(p, 1))
-        goto err;
-
- loop:
-    for (i = 1; i < NUMPRIMES; i++) {
-        /* check that p and q are prime */
-        /*
-         * check that for p and q gcd(p-1,primes) == 1 (except for 2)
-         */
-        BN_ULONG pmod = BN_mod_word(p, (BN_ULONG)primes[i]);
-        BN_ULONG qmod = BN_mod_word(q, (BN_ULONG)primes[i]);
-        if (pmod == (BN_ULONG)-1 || qmod == (BN_ULONG)-1)
-            goto err;
-        if (pmod == 0 || qmod == 0) {
-            if (!BN_add(p, p, padd))
-                goto err;
-            if (!BN_add(q, q, qadd))
-                goto err;
-            goto loop;
-        }
-    }
-    ret = 1;
-
- err:
-    BN_CTX_end(ctx);
-    bn_check_top(p);
-    return ret;
-}
diff --git a/crypto/conf/conf_lib.c b/crypto/conf/conf_lib.c
index 0b7dd26d63b0..add1dfa1c181 100644
--- a/crypto/conf/conf_lib.c
+++ b/crypto/conf/conf_lib.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -356,8 +356,10 @@ OPENSSL_INIT_SETTINGS *OPENSSL_INIT_new(void)
 {
     OPENSSL_INIT_SETTINGS *ret = malloc(sizeof(*ret));
 
-    if (ret != NULL)
-        memset(ret, 0, sizeof(*ret));
+    if (ret == NULL)
+        return NULL;
+
+    memset(ret, 0, sizeof(*ret));
     ret->flags = DEFAULT_CONF_MFLAGS;
 
     return ret;
diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt
index f5324c6819d8..35512f9caf96 100644
--- a/crypto/err/openssl.txt
+++ b/crypto/err/openssl.txt
@@ -2852,7 +2852,6 @@ SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES:242:unable to load ssl3 md5 routines
 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES:243:unable to load ssl3 sha1 routines
 SSL_R_UNEXPECTED_CCS_MESSAGE:262:unexpected ccs message
 SSL_R_UNEXPECTED_END_OF_EARLY_DATA:178:unexpected end of early data
-SSL_R_UNEXPECTED_EOF_WHILE_READING:294:unexpected eof while reading
 SSL_R_UNEXPECTED_MESSAGE:244:unexpected message
 SSL_R_UNEXPECTED_RECORD:245:unexpected record
 SSL_R_UNINITIALIZED:276:uninitialized
diff --git a/crypto/ex_data.c b/crypto/ex_data.c
index 22f3b70edf14..0f5a9295056a 100644
--- a/crypto/ex_data.c
+++ b/crypto/ex_data.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -235,7 +235,7 @@ int CRYPTO_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad)
         return 0;
     }
     for (i = 0; i < mx; i++) {
-        if (storage[i] && storage[i]->new_func) {
+        if (storage[i] != NULL && storage[i]->new_func != NULL) {
             ptr = CRYPTO_get_ex_data(ad, i);
             storage[i]->new_func(obj, ptr, ad, i,
                                  storage[i]->argl, storage[i]->argp);
@@ -299,7 +299,7 @@ int CRYPTO_dup_ex_data(int class_index, CRYPTO_EX_DATA *to,
 
     for (i = 0; i < mx; i++) {
         ptr = CRYPTO_get_ex_data(from, i);
-        if (storage[i] && storage[i]->dup_func)
+        if (storage[i] != NULL && storage[i]->dup_func != NULL)
             if (!storage[i]->dup_func(to, from, &ptr, i,
                                       storage[i]->argl, storage[i]->argp))
                 goto err;
diff --git a/crypto/pkcs12/p12_crt.c b/crypto/pkcs12/p12_crt.c
index d43dc3b30cf3..bfcae3f697e9 100644
--- a/crypto/pkcs12/p12_crt.c
+++ b/crypto/pkcs12/p12_crt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -62,7 +62,8 @@ PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *
     if (pkey && cert) {
         if (!X509_check_private_key(cert, pkey))
             return NULL;
-        X509_digest(cert, EVP_sha1(), keyid, &keyidlen);
+        if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
+            return NULL;
     }
 
     if (cert) {
diff --git a/crypto/ts/ts_rsp_sign.c b/crypto/ts/ts_rsp_sign.c
index a584ae5f5edd..041a187da68c 100644
--- a/crypto/ts/ts_rsp_sign.c
+++ b/crypto/ts/ts_rsp_sign.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -771,7 +771,8 @@ static ESS_CERT_ID *ess_CERT_ID_new_init(X509 *cert, int issuer_needed)
     X509_check_purpose(cert, -1, 0);
     if ((cid = ESS_CERT_ID_new()) == NULL)
         goto err;
-    X509_digest(cert, EVP_sha1(), cert_sha1, NULL);
+    if (!X509_digest(cert, EVP_sha1(), cert_sha1, NULL))
+        goto err;
     if (!ASN1_OCTET_STRING_set(cid->hash, cert_sha1, SHA_DIGEST_LENGTH))
         goto err;
 
diff --git a/crypto/ts/ts_rsp_verify.c b/crypto/ts/ts_rsp_verify.c
index 086021247c01..c2e7abd67f50 100644
--- a/crypto/ts/ts_rsp_verify.c
+++ b/crypto/ts/ts_rsp_verify.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -289,11 +289,12 @@ static int ts_find_cert(STACK_OF(ESS_CERT_ID) *cert_ids, X509 *cert)
     if (!cert_ids || !cert)
         return -1;
 
-    X509_digest(cert, EVP_sha1(), cert_sha1, NULL);
-
     /* Recompute SHA1 hash of certificate if necessary (side effect). */
     X509_check_purpose(cert, -1, 0);
 
+    if (!X509_digest(cert, EVP_sha1(), cert_sha1, NULL))
+        return -1;
+
     /* Look for cert in the cert_ids vector. */
     for (i = 0; i < sk_ESS_CERT_ID_num(cert_ids); ++i) {
         ESS_CERT_ID *cid = sk_ESS_CERT_ID_value(cert_ids, i);
@@ -326,7 +327,8 @@ static int ts_find_cert_v2(STACK_OF(ESS_CERT_ID_V2) *cert_ids, X509 *cert)
         else
             md = EVP_sha256();
 
-        X509_digest(cert, md, cert_digest, &len);
+        if (!X509_digest(cert, md, cert_digest, &len))
+            return -1;
         if (cid->hash->length != (int)len)
             return -1;
 
diff --git a/crypto/x509/x509_cmp.c b/crypto/x509/x509_cmp.c
index e06489c3347b..d1600e1e8dda 100644
--- a/crypto/x509/x509_cmp.c
+++ b/crypto/x509/x509_cmp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -134,9 +134,12 @@ unsigned long X509_subject_name_hash_old(X509 *x)
 int X509_cmp(const X509 *a, const X509 *b)
 {
     int rv;
+
     /* ensure hash is valid */
-    X509_check_purpose((X509 *)a, -1, 0);
-    X509_check_purpose((X509 *)b, -1, 0);
+    if (X509_check_purpose((X509 *)a, -1, 0) != 1)
+        return -2;
+    if (X509_check_purpose((X509 *)b, -1, 0) != 1)
+        return -2;
 
     rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
     if (rv)
diff --git a/crypto/x509/x509_trs.c b/crypto/x509/x509_trs.c
index 9e199d63e46a..a10d437735b8 100644
--- a/crypto/x509/x509_trs.c
+++ b/crypto/x509/x509_trs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -240,8 +240,9 @@ static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
 static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, 0);
-    if ((flags & X509_TRUST_NO_SS_COMPAT) == 0 && x->ex_flags & EXFLAG_SS)
+    if (X509_check_purpose(x, -1, 0) != 1)
+        return X509_TRUST_UNTRUSTED;
+    if ((flags & X509_TRUST_NO_SS_COMPAT) == 0 && (x->ex_flags & EXFLAG_SS))
         return X509_TRUST_TRUSTED;
     else
         return X509_TRUST_UNTRUSTED;
diff --git a/crypto/x509/x509_vfy.c b/crypto/x509/x509_vfy.c
index 361954c62ee7..f28f2d2610f6 100644
--- a/crypto/x509/x509_vfy.c
+++ b/crypto/x509/x509_vfy.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -107,12 +107,8 @@ static int null_callback(int ok, X509_STORE_CTX *e)
 /* Return 1 is a certificate is self signed */
 static int cert_self_signed(X509 *x)
 {
-    /*
-     * FIXME: x509v3_cache_extensions() needs to detect more failures and not
-     * set EXFLAG_SET when that happens.  Especially, if the failures are
-     * parse errors, rather than memory pressure!
-     */
-    X509_check_purpose(x, -1, 0);
+    if (X509_check_purpose(x, -1, 0) != 1)
+        return 0;
     if (x->ex_flags & EXFLAG_SS)
         return 1;
     else
diff --git a/crypto/x509/x_all.c b/crypto/x509/x_all.c
index 6cccfa99d1a6..aa5ccba44899 100644
--- a/crypto/x509/x_all.c
+++ b/crypto/x509/x_all.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -362,7 +362,8 @@ int X509_pubkey_digest(const X509 *data, const EVP_MD *type,
 int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
                 unsigned int *len)
 {
-    if (type == EVP_sha1() && (data->ex_flags & EXFLAG_SET) != 0) {
+    if (type == EVP_sha1() && (data->ex_flags & EXFLAG_SET) != 0
+            && (data->ex_flags & EXFLAG_INVALID) == 0) {
         /* Asking for SHA1 and we already computed it. */
         if (len != NULL)
             *len = sizeof(data->sha1_hash);
@@ -376,7 +377,8 @@ int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
 int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type,
                     unsigned char *md, unsigned int *len)
 {
-    if (type == EVP_sha1() && (data->flags & EXFLAG_SET) != 0) {
+    if (type == EVP_sha1() && (data->flags & EXFLAG_SET) != 0
+            && (data->flags & EXFLAG_INVALID) == 0) {
         /* Asking for SHA1; always computed in CRL d2i. */
         if (len != NULL)
             *len = sizeof(data->sha1_hash);
diff --git a/crypto/x509/x_crl.c b/crypto/x509/x_crl.c
index e864126fef37..c9762f9e2394 100644
--- a/crypto/x509/x_crl.c
+++ b/crypto/x509/x_crl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -17,7 +17,7 @@
 
 static int X509_REVOKED_cmp(const X509_REVOKED *const *a,
                             const X509_REVOKED *const *b);
-static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
+static int setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
 
 ASN1_SEQUENCE(X509_REVOKED) = {
         ASN1_EMBED(X509_REVOKED,serialNumber, ASN1_INTEGER),
@@ -155,7 +155,7 @@ static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
     X509_CRL *crl = (X509_CRL *)*pval;
     STACK_OF(X509_EXTENSION) *exts;
     X509_EXTENSION *ext;
-    int idx;
+    int idx, i;
 
     switch (operation) {
     case ASN1_OP_D2I_PRE:
@@ -184,23 +184,35 @@ static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
         break;
 
     case ASN1_OP_D2I_POST:
-        X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
+        if (!X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL))
+            crl->flags |= EXFLAG_INVALID;
         crl->idp = X509_CRL_get_ext_d2i(crl,
-                                        NID_issuing_distribution_point, NULL,
+                                        NID_issuing_distribution_point, &i,
                                         NULL);
-        if (crl->idp)
-            setup_idp(crl, crl->idp);
+        if (crl->idp != NULL) {
+            if (!setup_idp(crl, crl->idp))
+                crl->flags |= EXFLAG_INVALID;
+        }
+        else if (i != -1) {
+            crl->flags |= EXFLAG_INVALID;
+        }
 
         crl->akid = X509_CRL_get_ext_d2i(crl,
-                                         NID_authority_key_identifier, NULL,
+                                         NID_authority_key_identifier, &i,
                                          NULL);
+        if (crl->akid == NULL && i != -1)
+            crl->flags |= EXFLAG_INVALID;
 
         crl->crl_number = X509_CRL_get_ext_d2i(crl,
-                                               NID_crl_number, NULL, NULL);
+                                               NID_crl_number, &i, NULL);
+        if (crl->crl_number == NULL && i != -1)
+            crl->flags |= EXFLAG_INVALID;
 
         crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
-                                                    NID_delta_crl, NULL,
+                                                    NID_delta_crl, &i,
                                                     NULL);
+        if (crl->base_crl_number == NULL && i != -1)
+            crl->flags |= EXFLAG_INVALID;
         /* Delta CRLs must have CRL number */
         if (crl->base_crl_number && !crl->crl_number)
             crl->flags |= EXFLAG_INVALID;
@@ -259,9 +271,10 @@ static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 
 /* Convert IDP into a more convenient form */
 
-static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
+static int setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
 {
     int idp_only = 0;
+
     /* Set various flags according to IDP */
     crl->idp_flags |= IDP_PRESENT;
     if (idp->onlyuser > 0) {
@@ -292,7 +305,7 @@ static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
         crl->idp_reasons &= CRLDP_ALL_REASONS;
     }
 
-    DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
+    return DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
 }
 
 ASN1_SEQUENCE_ref(X509_CRL, crl_cb) = {
diff --git a/crypto/x509v3/v3_purp.c b/crypto/x509v3/v3_purp.c
index 3f60c2ea1da3..2bc8253d2dab 100644
--- a/crypto/x509v3/v3_purp.c
+++ b/crypto/x509v3/v3_purp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -81,6 +81,8 @@ int X509_check_purpose(X509 *x, int id, int ca)
     const X509_PURPOSE *pt;
 
     x509v3_cache_extensions(x);
+    if (x->ex_flags & EXFLAG_INVALID)
+        return -1;
 
     /* Return if side-effect only call */
     if (id == -1)
@@ -300,10 +302,11 @@ int X509_supported_extension(X509_EXTENSION *ex)
     return 0;
 }
 
-static void setup_dp(X509 *x, DIST_POINT *dp)
+static int setup_dp(X509 *x, DIST_POINT *dp)
 {
     X509_NAME *iname = NULL;
     int i;
+
     if (dp->reasons) {
         if (dp->reasons->length > 0)
             dp->dp_reasons = dp->reasons->data[0];
@@ -313,7 +316,7 @@ static void setup_dp(X509 *x, DIST_POINT *dp)
     } else
         dp->dp_reasons = CRLDP_ALL_REASONS;
     if (!dp->distpoint || (dp->distpoint->type != 1))
-        return;
+        return 1;
     for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
         GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
         if (gen->type == GEN_DIRNAME) {
@@ -324,16 +327,21 @@ static void setup_dp(X509 *x, DIST_POINT *dp)
     if (!iname)
         iname = X509_get_issuer_name(x);
 
-    DIST_POINT_set_dpname(dp->distpoint, iname);
-
+    return DIST_POINT_set_dpname(dp->distpoint, iname);
 }
 
-static void setup_crldp(X509 *x)
+static int setup_crldp(X509 *x)
 {
     int i;
-    x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
-    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++)
-        setup_dp(x, sk_DIST_POINT_value(x->crldp, i));
+
+    x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, &i, NULL);
+    if (x->crldp == NULL && i != -1)
+        return 0;
+    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++) {
+        if (!setup_dp(x, sk_DIST_POINT_value(x->crldp, i)))
+            return 0;
+    }
+    return 1;
 }
 
 #define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
@@ -366,12 +374,13 @@ static void x509v3_cache_extensions(X509 *x)
         return;
     }
 
-    X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
+    if (!X509_digest(x, EVP_sha1(), x->sha1_hash, NULL))
+        x->ex_flags |= EXFLAG_INVALID;
     /* V1 should mean no extensions ... */
     if (!X509_get_version(x))
         x->ex_flags |= EXFLAG_V1;
     /* Handle basic constraints */
-    if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
+    if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, &i, NULL))) {
         if (bs->ca)
             x->ex_flags |= EXFLAG_CA;
         if (bs->pathlen) {
@@ -385,9 +394,11 @@ static void x509v3_cache_extensions(X509 *x)
             x->ex_pathlen = -1;
         BASIC_CONSTRAINTS_free(bs);
         x->ex_flags |= EXFLAG_BCONS;
+    } else if (i != -1) {
+        x->ex_flags |= EXFLAG_INVALID;
     }
     /* Handle proxy certificates */
-    if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
+    if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, &i, NULL))) {
         if (x->ex_flags & EXFLAG_CA
             || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0
             || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) {
@@ -399,9 +410,11 @@ static void x509v3_cache_extensions(X509 *x)
             x->ex_pcpathlen = -1;
         PROXY_CERT_INFO_EXTENSION_free(pci);
         x->ex_flags |= EXFLAG_PROXY;
+    } else if (i != -1) {
+        x->ex_flags |= EXFLAG_INVALID;
     }
     /* Handle key usage */
-    if ((usage = X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
+    if ((usage = X509_get_ext_d2i(x, NID_key_usage, &i, NULL))) {
         if (usage->length > 0) {
             x->ex_kusage = usage->data[0];
             if (usage->length > 1)
@@ -410,9 +423,11 @@ static void x509v3_cache_extensions(X509 *x)
             x->ex_kusage = 0;
         x->ex_flags |= EXFLAG_KUSAGE;
         ASN1_BIT_STRING_free(usage);
+    } else if (i != -1) {
+        x->ex_flags |= EXFLAG_INVALID;
     }
     x->ex_xkusage = 0;
-    if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
+    if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, &i, NULL))) {
         x->ex_flags |= EXFLAG_XKUSAGE;
         for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
             switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) {
@@ -455,18 +470,26 @@ static void x509v3_cache_extensions(X509 *x)
             }
         }
         sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
+    } else if (i != -1) {
+        x->ex_flags |= EXFLAG_INVALID;
     }
 
-    if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
+    if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, &i, NULL))) {
         if (ns->length > 0)
             x->ex_nscert = ns->data[0];
         else
             x->ex_nscert = 0;
         x->ex_flags |= EXFLAG_NSCERT;
         ASN1_BIT_STRING_free(ns);
+    } else if (i != -1) {
+        x->ex_flags |= EXFLAG_INVALID;
     }
-    x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, NULL, NULL);
-    x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, NULL, NULL);
+    x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, &i, NULL);
+    if (x->skid == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
+    x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, &i, NULL);
+    if (x->akid == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
     /* Does subject name match issuer ? */
     if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) {
         x->ex_flags |= EXFLAG_SI;
@@ -475,16 +498,22 @@ static void x509v3_cache_extensions(X509 *x)
             !ku_reject(x, KU_KEY_CERT_SIGN))
             x->ex_flags |= EXFLAG_SS;
     }
-    x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
-    x->nc = X509_get_ext_d2i(x, NID_name_constraints, &i, NULL);
-    if (!x->nc && (i != -1))
+    x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, &i, NULL);
+    if (x->altname == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
+    x->nc = X509_get_ext_d2i(x, NID_name_constraints, &i, NULL);
+    if (x->nc == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
+    if (!setup_crldp(x))
         x->ex_flags |= EXFLAG_INVALID;
-    setup_crldp(x);
 
 #ifndef OPENSSL_NO_RFC3779
-    x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, NULL, NULL);
-    x->rfc3779_asid = X509_get_ext_d2i(x, NID_sbgp_autonomousSysNum,
-                                       NULL, NULL);
+    x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, &i, NULL);
+    if (x->rfc3779_addr == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
+    x->rfc3779_asid = X509_get_ext_d2i(x, NID_sbgp_autonomousSysNum, &i, NULL);
+    if (x->rfc3779_asid == NULL && i != -1)
+        x->ex_flags |= EXFLAG_INVALID;
 #endif
     for (i = 0; i < X509_get_ext_count(x); i++) {
         ex = X509_get_ext(x, i);
@@ -777,7 +806,11 @@ int X509_check_issued(X509 *issuer, X509 *subject)
         return X509_V_ERR_SUBJECT_ISSUER_MISMATCH;
 
     x509v3_cache_extensions(issuer);
+    if (issuer->ex_flags & EXFLAG_INVALID)
+        return X509_V_ERR_UNSPECIFIED;
     x509v3_cache_extensions(subject);
+    if (subject->ex_flags & EXFLAG_INVALID)
+        return X509_V_ERR_UNSPECIFIED;
 
     if (subject->akid) {
         int ret = X509_check_akid(issuer, subject->akid);
@@ -842,7 +875,8 @@ uint32_t X509_get_extension_flags(X509 *x)
 uint32_t X509_get_key_usage(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return 0;
     if (x->ex_flags & EXFLAG_KUSAGE)
         return x->ex_kusage;
     return UINT32_MAX;
@@ -851,7 +885,8 @@ uint32_t X509_get_key_usage(X509 *x)
 uint32_t X509_get_extended_key_usage(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return 0;
     if (x->ex_flags & EXFLAG_XKUSAGE)
         return x->ex_xkusage;
     return UINT32_MAX;
@@ -860,28 +895,32 @@ uint32_t X509_get_extended_key_usage(X509 *x)
 const ASN1_OCTET_STRING *X509_get0_subject_key_id(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return NULL;
     return x->skid;
 }
 
 const ASN1_OCTET_STRING *X509_get0_authority_key_id(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return NULL;
     return (x->akid != NULL ? x->akid->keyid : NULL);
 }
 
 const GENERAL_NAMES *X509_get0_authority_issuer(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return NULL;
     return (x->akid != NULL ? x->akid->issuer : NULL);
 }
 
 const ASN1_INTEGER *X509_get0_authority_serial(X509 *x)
 {
     /* Call for side-effect of computing hash and caching extensions */
-    X509_check_purpose(x, -1, -1);
+    if (X509_check_purpose(x, -1, -1) != 1)
+        return NULL;
     return (x->akid != NULL ? x->akid->serial : NULL);
 }
 
diff --git a/doc/man3/BN_generate_prime.pod b/doc/man3/BN_generate_prime.pod
index 31fbc1ffa174..f1e63f3b3c4a 100644
--- a/doc/man3/BN_generate_prime.pod
+++ b/doc/man3/BN_generate_prime.pod
@@ -52,7 +52,9 @@ Deprecated:
 
 BN_generate_prime_ex() generates a pseudo-random prime number of
 at least bit length B<bits>. The returned number is probably prime
-with a negligible error.
+with a negligible error. If B<add> is B<NULL> the returned prime
+number will have exact bit length B<bits> with the top most two
+bits set.
 
 If B<ret> is not B<NULL>, it will be used to store the number.
 
@@ -89,7 +91,9 @@ If B<add> is not B<NULL>, the prime will fulfill the condition p % B<add>
 generator.
 
 If B<safe> is true, it will be a safe prime (i.e. a prime p so
-that (p-1)/2 is also prime).
+that (p-1)/2 is also prime). If B<safe> is true, and B<rem> == B<NULL>
+the condition will be p % B<add> == 3.
+It is recommended that B<add> is a multiple of 4.
 
 The random generator must be seeded prior to calling BN_generate_prime_ex().
 If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to
@@ -206,7 +210,7 @@ and BN_GENCB_get_arg() functions were added in OpenSSL 1.1.0.
 
 =head1 COPYRIGHT
 
-Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
diff --git a/doc/man3/SSL_get_error.pod b/doc/man3/SSL_get_error.pod
index 97320a6c153f..5221ccfe1804 100644
--- a/doc/man3/SSL_get_error.pod
+++ b/doc/man3/SSL_get_error.pod
@@ -155,6 +155,18 @@ connection and SSL_shutdown() must not be called.
 
 =back
 
+=head1 BUGS
+
+The B<SSL_ERROR_SYSCALL> with B<errno> value of 0 indicates unexpected EOF from
+the peer. This will be properly reported as B<SSL_ERROR_SSL> with reason
+code B<SSL_R_UNEXPECTED_EOF_WHILE_READING> in the OpenSSL 3.0 release because
+it is truly a TLS protocol error to terminate the connection without
+a SSL_shutdown().
+
+The issue is kept unfixed in OpenSSL 1.1.1 releases because many applications
+which choose to ignore this protocol error depend on the existing way of
+reporting the error.
+
 =head1 SEE ALSO
 
 L<ssl(7)>
@@ -166,7 +178,7 @@ The SSL_ERROR_WANT_CLIENT_HELLO_CB error code was added in OpenSSL 1.1.1.
 
 =head1 COPYRIGHT
 
-Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
diff --git a/doc/man3/X509_get_extension_flags.pod b/doc/man3/X509_get_extension_flags.pod
index 2dfe2ef37275..43c9c952c6b7 100644
--- a/doc/man3/X509_get_extension_flags.pod
+++ b/doc/man3/X509_get_extension_flags.pod
@@ -80,6 +80,17 @@ The certificate contains an unhandled critical extension.
 
 Some certificate extension values are invalid or inconsistent. The
 certificate should be rejected.
+This bit may also be raised after an out-of-memory error while
+processing the X509 object, so it may not be related to the processed
+ASN1 object itself.
+
+=item B<EXFLAG_INVALID_POLICY>
+
+The NID_certificate_policies certificate extension is invalid or
+inconsistent. The certificate should be rejected.
+This bit may also be raised after an out-of-memory error while
+processing the X509 object, so it may not be related to the processed
+ASN1 object itself.
 
 =item B<EXFLAG_KUSAGE>
 
@@ -183,7 +194,7 @@ X509_get_proxy_pathlen() were added in OpenSSL 1.1.0.
 
 =head1 COPYRIGHT
 
-Copyright 2015-2019 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
diff --git a/include/openssl/opensslv.h b/include/openssl/opensslv.h
index dd8ef3df722f..8c697f5f7acc 100644
--- a/include/openssl/opensslv.h
+++ b/include/openssl/opensslv.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -39,8 +39,8 @@ extern "C" {
  * (Prior to 0.9.5a beta1, a different scheme was used: MMNNFFRBB for
  *  major minor fix final patch/beta)
  */
-# define OPENSSL_VERSION_NUMBER  0x1010105fL
-# define OPENSSL_VERSION_TEXT    "OpenSSL 1.1.1e  17 Mar 2020"
+# define OPENSSL_VERSION_NUMBER  0x1010106fL
+# define OPENSSL_VERSION_TEXT    "OpenSSL 1.1.1f  31 Mar 2020"
 
 /*-
  * The macros below are to be used for shared library (.so, .dll, ...)
diff --git a/include/openssl/sslerr.h b/include/openssl/sslerr.h
index 0ef684f3c131..82983d3c1e99 100644
--- a/include/openssl/sslerr.h
+++ b/include/openssl/sslerr.h
@@ -734,7 +734,6 @@ int ERR_load_SSL_strings(void);
 # define SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES          243
 # define SSL_R_UNEXPECTED_CCS_MESSAGE                     262
 # define SSL_R_UNEXPECTED_END_OF_EARLY_DATA               178
-# define SSL_R_UNEXPECTED_EOF_WHILE_READING               294
 # define SSL_R_UNEXPECTED_MESSAGE                         244
 # define SSL_R_UNEXPECTED_RECORD                          245
 # define SSL_R_UNINITIALIZED                              276
diff --git a/ssl/record/rec_layer_s3.c b/ssl/record/rec_layer_s3.c
index 1c885a664f35..b2a7a47eb075 100644
--- a/ssl/record/rec_layer_s3.c
+++ b/ssl/record/rec_layer_s3.c
@@ -296,12 +296,6 @@ int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold,
             ret = BIO_read(s->rbio, pkt + len + left, max - left);
             if (ret >= 0)
                 bioread = ret;
-            if (ret <= 0
-                    && !BIO_should_retry(s->rbio)
-                    && BIO_eof(s->rbio)) {
-                SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL3_READ_N,
-                         SSL_R_UNEXPECTED_EOF_WHILE_READING);
-            }
         } else {
             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_READ_N,
                      SSL_R_READ_BIO_NOT_SET);
diff --git a/ssl/ssl_err.c b/ssl/ssl_err.c
index a0c7b79659d4..4b12ed1485d9 100644
--- a/ssl/ssl_err.c
+++ b/ssl/ssl_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -1205,8 +1205,6 @@ static const ERR_STRING_DATA SSL_str_reasons[] = {
     "unexpected ccs message"},
     {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_END_OF_EARLY_DATA),
     "unexpected end of early data"},
-    {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_EOF_WHILE_READING),
-    "unexpected eof while reading"},
     {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_MESSAGE), "unexpected message"},
     {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_RECORD), "unexpected record"},
     {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNINITIALIZED), "uninitialized"},