d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
6bc7175f31
freebsd-dev/bin
History
Jilles Tjoelker 6bc7175f31 sh: Fix double INTON with vfork 
The shell maintains a count of the number of times SIGINT processing has
been disabled via INTOFF, so SIGINT processing resumes when all disables
have enabled again (INTON).

If an error occurs in a vfork() child, the processing of the error enables
SIGINT processing again, and the INTON in vforkexecshell() causes the count
to become negative.

As a result, a later INTOFF may not actually disable SIGINT processing. This
might cause memory corruption if a SIGINT arrives at an inopportune time. As
of r360452, it causes the shell to abort when it would unsafely allocate or
free memory in certain ways.

Note that various places such as errors in non-special builtins
unconditionally reset the count to 0, so the problem might still not always
be visible.

PR:		246497
Reported by:	jbeich
MFC after:	2 weeks
2020-05-16 16:29:23 +00:00
..
cat Allow building bin/cat on non-FreeBSD systems 2020-01-16 14:15:00 +00:00
chflags Add an example to the chflags(1) man page. 2018-06-12 16:44:13 +00:00
chio DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
chmod Correct wording around '-' masks. 2019-03-09 00:30:13 +00:00
cp General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
csh Fix .depend files to work for build tools. 2019-06-15 17:08:13 +00:00
date Restore the -n flag parsing, but ignore it. 2019-04-24 05:24:10 +00:00
dd Add iflag=fullblock to dd 2019-09-30 22:00:48 +00:00
df Add a deprecation warning when using the feature which mounts devices 2018-02-10 00:22:25 +00:00
domainname General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
echo Convert cap_enter() < 0 && errno != ENOSYS to caph_enter() < 0. 2018-06-19 23:43:14 +00:00
ed Drop ed(1) "crypto" 2018-11-04 17:56:16 +00:00
expr expr(1): Fix overflow detection when operand is INTMAX_MIN 2018-04-14 04:35:10 +00:00
freebsd-version Convert freebsd-version to using -v 2019-05-23 17:19:00 +00:00
getfacl Avoid copying a struct stat for acl_from_stat() calls. 2018-11-01 17:45:29 +00:00
hostname General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
kenv Fix mandoc -Tlint warnings in bin/ 2017-12-07 01:57:27 +00:00
kill General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
ln General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
ls ls(1): Fix trivial SEGV due to NULL deref in OOM path 2020-05-05 18:06:32 +00:00
mkdir General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mv General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
pax Add a note that the use of -B option does not guarantee a size of fragment 2018-12-29 23:08:59 +00:00
pkill Clarify that /dev/kmem is not used. 2018-12-03 20:01:51 +00:00
ps ps: extend the non-standard option -d (tree view) to work with -p 2020-05-07 16:56:18 +00:00
pwait Remove unused include. 2020-02-02 20:51:28 +00:00
pwd pwd: mark usage as dead 2018-06-17 05:14:50 +00:00
realpath General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
rm Remove include of stdint.h. It was added in r241014 for uintmax_t, 2020-04-23 03:46:41 +00:00
rmail DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
rmdir General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
setfacl Don't set NFSv4 ACL inheritance flags on non-directories. 2018-10-26 21:17:06 +00:00
sh sh: Fix double INTON with vfork 2020-05-16 16:29:23 +00:00
sleep Convert cap_enter() < 0 && errno != ENOSYS to caph_enter() < 0. 2018-06-19 23:43:14 +00:00
stty Some devices take undesired actions when RTS and DTR are 2019-06-12 18:07:04 +00:00
sync DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
test DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
tests Merge ^/user/ngie/release-pkg-fix-tests to unbreak how test files are installed 2016-05-04 23:20:53 +00:00
uuidgen pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
Makefile Remove rcmds. 2017-10-06 08:43:14 +00:00
Makefile.inc Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00