From: Francois-Xavier Le Bail <devel.fx.lebail@orange.fr>
Date: Mon, 22 Aug 2022 15:56:18 +0000 (+0200)
Subject: IPv6: Add a check for the Jumbo Payload Hop-by-Hop option
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/bbcd77cdee2052c7f0d2fad0b34a96fb662f406c

IPv6: Add a check for the Jumbo Payload Hop-by-Hop option
---

diff --git a/print-ip6.c b/print-ip6.c
index 2784401c..2f1183c0 100644
--- a/print-ip6.c
+++ b/print-ip6.c
@@ -351,6 +351,11 @@ ip6_print(netdissect_options *ndo, const u_char *bp, u_int length)
 				return;
 			}
 			advance = hbhopt_process(ndo, cp, &found_jumbo, &payload_len);
+			if (payload_len == 0 && found_jumbo == 0) {
+				ND_PRINT("[No valid Jumbo Payload Hop-by-Hop option found]");
+				nd_print_invalid(ndo);
+				return;
+			}
 			if (advance < 0) {
 				nd_pop_packet_info(ndo);
 				return;