Author: tuexen
Date: Sun Feb 10 13:55:32 2019
New Revision: 343960
URL: https://svnweb.freebsd.org/changeset/base/343960
Log:
Fix a locking issue in the IPPROTO_SCTP level SCTP_PEER_ADDR_THLDS socket
option. The problem affects only 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 13:44:36 2019
(r343959)
+++ head/sys/netinet/sctp_usrreq.c Sun Feb 10 13:55:32 2019
(r343960)
@@ -6335,6 +6335,9 @@ sctp_setopt(struct socket *so, int optname, void *optv
}
}
if (thlds->spt_pathcpthld != 0xffff) {
+ if (stcb != NULL) {
+ SCTP_TCB_UNLOCK(stcb);
+ }
error = EINVAL;
SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
SCTP_FROM_SCTP_USRREQ, error);
break;
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