Author: glebius
Date: Tue May 17 22:30:43 2016
New Revision: 300092
URL: https://svnweb.freebsd.org/changeset/base/300092
Log:
Validate that user supplied control message length is not negative.
Submitted by: C Turt <cturt hardenedbsd.org>
Security: SA-16:19
Security: CVE-2016-1887
Modified:
stable/10/sys/kern/uipc_syscalls.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/kern/uipc_syscalls.c
==============================================================================
--- stable/10/sys/kern/uipc_syscalls.c Tue May 17 22:29:59 2016
(r300091)
+++ stable/10/sys/kern/uipc_syscalls.c Tue May 17 22:30:43 2016
(r300092)
@@ -1787,6 +1787,9 @@ sockargs(mp, buf, buflen, type)
struct mbuf *m;
int error;
+ if (buflen < 0)
+ return (EINVAL);
+
if (buflen > MLEN) {
#ifdef COMPAT_OLDSOCK
if (type == MT_SONAME && buflen <= 112)
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