Author: phk
Date: Tue Jun 28 20:10:30 2016
New Revision: 302256
URL: https://svnweb.freebsd.org/changeset/base/302256
Log:
Do not coredump if the packet is too long in the global (non-interface
associated) instance.
The result is that the packet is dropped without an indication
that smaller MTU is advisable, which is not optimal, but better
than a NULL pointer deref.
Approved by: re (glebius)
Modified:
head/sbin/natd/natd.c
Modified: head/sbin/natd/natd.c
==============================================================================
--- head/sbin/natd/natd.c Tue Jun 28 19:53:16 2016 (r302255)
+++ head/sbin/natd/natd.c Tue Jun 28 20:10:30 2016 (r302256)
@@ -618,7 +618,7 @@ static void DoGlobal (int fd)
if (wrote != bytes) {
- if (errno == EMSGSIZE) {
+ if (errno == EMSGSIZE && mip != NULL) {
if (mip->ifMTU != -1)
SendNeedFragIcmp (icmpSock,
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