From: Francois-Xavier Le Bail <devel.fx.lebail@orange.fr>
Date: Fri, 14 May 2021 18:34:35 +0000 (+0200)
Subject: IEEE 802.15.4: Add a bounds check
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/d76dc9f90ab9c6188063696668b6f2e749df7911

IEEE 802.15.4: Add a bounds check

This avoids to have cp (current pointer on packet data) > ndo->ndo_snapend
in hex_and_ascii_print(), via ndo_default_print(), via ND_DEFAULTPRINT(),
in some cases.
---

diff --git a/print-802_15_4.c b/print-802_15_4.c
index 3d307ffd..5687d455 100644
--- a/print-802_15_4.c
+++ b/print-802_15_4.c
@@ -2021,6 +2021,7 @@ ieee802_15_4_std_frames(netdissect_options *ndo,
 		if (len < 0) {
 			return 0;
 		}
+		ND_TCHECK_LEN(p, len);
 		p += len;
 		caplen -= len;
 	} else {