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sctp: improve input validation of mapped addresses in sctp_connectx()

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MFC after:	3 days
This commit is contained in:
Michael Tuexen 2021-08-07 15:12:09 +02:00
parent b732091a76
commit 112899c6af
1 changed files with 4 additions and 4 deletions
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8
sys/netinet/sctputil.c
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@ -6716,15 +6716,15 @@ sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
{
struct sockaddr_in6 *sin6;
incr = (unsigned int)sizeof(struct sockaddr_in6);
if (sa->sa_len != incr) {
return (EINVAL);
}
sin6 = (struct sockaddr_in6 *)sa;
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
/* Must be non-mapped for connectx */
return (EINVAL);
}
incr = (unsigned int)sizeof(struct sockaddr_in6);
if (sa->sa_len != incr) {
return (EINVAL);
}
(*num_v6) += 1;
break;
}