Check incoming data packets don't exceed MTU

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
sailfishos-mirror · Jan 26, 2015 · 7fd8a86 · 7fd8a86
1 parent ee445d9
commit 7fd8a86
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/oncp.c b/oncp.c
@@ -1308,7 +1308,7 @@ static int oncp_receive_data(struct openconnect_info *vpninfo, int len, int unre
 		}
 
 		/* Should never happen, but would cause an endless loop if it did. */
-		if (!pktlen)
+		if (!pktlen || pktlen > vpninfo->ip_info.mtu)
 			goto badlen;
 
 		/* Receive this packet */