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Don't use msg on error.

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Don't attempt to access msg structure if recvmsg returns an error.

PR#3483
Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

(cherry picked from commit 012aa9ec76b158179b4de44bb5de8b8472045eac)
This commit is contained in:
Jan Hykel 2014-11-16 16:51:17 +00:00 committed by Dr. Stephen Henson
parent ba7aaa5622
commit 305e2b4111
1 changed files with 7 additions and 7 deletions
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14
crypto/bio/bss_dgram.c
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@ -1082,6 +1082,13 @@ static int dgram_sctp_read(BIO *b, char *out, int outl)
msg.msg_flags = 0;
n = recvmsg(b->num, &msg, 0);
if (n <= 0)
{
if (n < 0)
ret = n;
break;
}
if (msg.msg_controllen > 0)
{
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
@ -1121,13 +1128,6 @@ static int dgram_sctp_read(BIO *b, char *out, int outl)
}
}
if (n <= 0)
{
if (n < 0)
ret = n;
break;
}
if (msg.msg_flags & MSG_NOTIFICATION)
{
snp = (union sctp_notification*) out;