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From: Michael Tuexen <tuexen@FreeBSD.org>
Date: Sun, 10 Feb 2019 10:42:16 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r343954 - head/sys/netinet
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Author: tuexen
Date: Sun Feb 10 10:42:16 2019
New Revision: 343954
URL: https://svnweb.freebsd.org/changeset/base/343954
Log:
Fix a locking bug in the IPPROTO_SCTP level SCTP_EVENT socket option.
This occurs when call setsockopt() with invalid parameters.
This issue was found by syzkaller.
MFC after: 3 days
Modified:
head/sys/netinet/sctp_usrreq.c
Modified: head/sys/netinet/sctp_usrreq.c
==============================================================================
--- head/sys/netinet/sctp_usrreq.c Sun Feb 10 08:46:07 2019 (r343953)
+++ head/sys/netinet/sctp_usrreq.c Sun Feb 10 10:42:16 2019 (r343954)
@@ -6115,6 +6115,10 @@ sctp_setopt(struct socket *so, int optname, void *optv
SCTP_INP_RUNLOCK(inp);
}
}
+ } else {
+ if (stcb) {
+ SCTP_TCB_UNLOCK(stcb);
+ }
}
break;
}