commit beca6e702546e24811a2ab10fd8eb50446155745
author Francois-Xavier Le Bail <fx.lebail@yahoo.com> Tue Jul 12 21:21:26 2016 +0200
committer Francois-Xavier Le Bail <fx.lebail@yahoo.com> Wed Jan 18 09:16:39 2017 +0100
tree c90af58e14b553d209139e568567a66fcbb495d7
parent 9281ad283a74476eefaf039f8c4ebc7c001a1cd1

IGMP: Add a length check

print-igmp.c

diff --git a/print-igmp.c b/print-igmp.c
index 9bc6025..0bb7f97 100644
--- a/print-igmp.c
+++ b/print-igmp.c
@@ -328,7 +328,7 @@
         break;
     }
 
-    if (ndo->ndo_vflag && ND_TTEST2(bp[0], len)) {
+    if (ndo->ndo_vflag && len >= 4 && ND_TTEST2(bp[0], len)) {
         /* Check the IGMP checksum */
         vec[0].ptr = bp;
         vec[0].len = len;