Author: hrs
Date: Mon Jul 4 03:19:06 2011
New Revision: 223752
URL: http://svn.freebsd.org/changeset/base/223752
Log:
Add sanity check for ifm_version in struct if_msghdr.
Modified:
head/usr.sbin/rtadvd/if.c
Modified: head/usr.sbin/rtadvd/if.c
==============================================================================
--- head/usr.sbin/rtadvd/if.c Mon Jul 4 01:27:41 2011 (r223751)
+++ head/usr.sbin/rtadvd/if.c Mon Jul 4 03:19:06 2011 (r223752)
@@ -105,6 +105,12 @@ if_nametosdl(char *name)
lim = buf + len;
for (next = buf; next < lim; next += ifm->ifm_msglen) {
ifm = (struct if_msghdr *)next;
+ if (ifm->ifm_version != RTM_VERSION) {
+ syslog(LOG_ERR,
+ "<%s> RTM_VERSION mismatch (%d != %d).",
+ __func__, ifm->ifm_version, RTM_VERSION);
+ continue;
+ }
if (ifm->ifm_type == RTM_IFINFO) {
sa = (struct sockaddr *)(ifm + 1);
get_rtaddrs(ifm->ifm_addrs, sa, rti_info);
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