lldpd: Fix CVE-2023-41910

Adds patch to backport fix for CVE-2023-41910.

Signed-off-by: Colin McAllister <colin.mcallister@garmin.com>
Change-Id: Iab619f1f5ba26b1141dffea065c90ef0b180b46e
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-daemons/lldpd/files/CVE-2023-41910.patch

@@ -0,0 +1,26 @@
+From ce7c3f84d80435a1bfad77ab8cb0e9ba401f1eea Mon Sep 17 00:00:00 2001
+From: Vincent Bernat <vincent@bernat.ch>
+Date: Wed, 12 Apr 2023 07:38:31 +0200
+Subject: [PATCH] daemon: fix read overflow when parsing CDP addresses
+
+Upstream-status: Backport [https://github.com/lldpd/lldpd/commit/a9aeabdf879c25c584852a0bb5523837632f099b]
+CVE: CVE-2023-41910
+---
+ src/daemon/protocols/cdp.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/daemon/protocols/cdp.c b/src/daemon/protocols/cdp.c
+index 4a14ff0..c3a7c22 100644
+--- a/src/daemon/protocols/cdp.c
++++ b/src/daemon/protocols/cdp.c
+@@ -483,6 +483,7 @@ cdp_decode(struct lldpd *cfg, char *frame, int s,
+ 					goto malformed;
+ 				}
+ 				PEEK_DISCARD(address_len);
++				addresses_len -= address_len;
+ 				(void)PEEK_SAVE(pos_next_address);
+ 				/* Next, we go back and try to extract
+ 				   IPv4 address */
+-- 
+2.47.1
+

meta-networking/recipes-daemons/lldpd/lldpd_1.0.8.bb

@@ -9,6 +9,7 @@ SRC_URI = "\
     http://media.luffy.cx/files/${BPN}/${BPN}-${PV}.tar.gz \
     file://lldpd.init.d \
     file://lldpd.default \
+    file://CVE-2023-41910.patch \
     "
 
 SRC_URI[md5sum] = "000042dbf5b445f750b5ba01ab25c8ba"