Author: markj
Date: Wed Feb 12 15:51:29 2020
New Revision: 357825
URL: https://svnweb.freebsd.org/changeset/base/357825
Log:
MFC r357575:
Improve validation of the sockaddr length in iruserok_sa().
PR: 243747
Modified:
stable/12/lib/libc/net/rcmd.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/lib/libc/net/rcmd.c
==============================================================================
--- stable/12/lib/libc/net/rcmd.c Wed Feb 12 15:46:33 2020
(r357824)
+++ stable/12/lib/libc/net/rcmd.c Wed Feb 12 15:51:29 2020
(r357825)
@@ -438,8 +438,8 @@ iruserok_sa(const void *ra, int rlen, int superuser, c
struct sockaddr_storage ss;
/* avoid alignment issue */
- if (rlen > sizeof(ss))
- return(-1);
+ if (rlen <= 0 || rlen > sizeof(ss))
+ return (-1);
memcpy(&ss, ra, rlen);
raddr = (struct sockaddr *)&ss;
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