Author: tuexen
Date: Sat May 4 09:28:11 2019
New Revision: 347087
URL: https://svnweb.freebsd.org/changeset/base/347087
Log:
MFC r343954:
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.
Modified:
stable/12/sys/netinet/sctp_usrreq.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/netinet/sctp_usrreq.c
==============================================================================
--- stable/12/sys/netinet/sctp_usrreq.c Sat May 4 09:25:32 2019
(r347086)
+++ stable/12/sys/netinet/sctp_usrreq.c Sat May 4 09:28:11 2019
(r347087)
@@ -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;
}
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