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net-snmp: Fix for CVE-2025-68615

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Upstream-Status: Backport from b4e6f826d9

Reference: https://github.com/net-snmp/net-snmp/security/advisories/GHSA-4389-rwqf-q9gq

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
This commit is contained in:
Vijay Anusuri 2026-01-07 21:01:25 +05:30 committed by Gyorgy Sarvari
parent 53abba638b
commit 42e868a468
2 changed files with 34 additions and 0 deletions
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33
meta-networking/recipes-protocols/net-snmp/net-snmp/CVE-2025-68615.patch Normal file
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@ -0,0 +1,33 @@
From b4e6f826d9ddcc2d72eac432746807e1234266db Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Sun, 2 Nov 2025 14:48:55 -0800
Subject: [PATCH] snmptrapd: Fix out-of-bounds trapOid[] accesses
Fixes: https://issues.oss-fuzz.com/issues/457106694
Fixes: https://issues.oss-fuzz.com/issues/458668421
Fixes: https://issues.oss-fuzz.com/issues/458876071
Upstream-Status: Backport [https://github.com/net-snmp/net-snmp/commit/b4e6f826d9ddcc2d72eac432746807e1234266db]
CVE: CVE-2025-68615
Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
---
apps/snmptrapd_handlers.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/apps/snmptrapd_handlers.c b/apps/snmptrapd_handlers.c
index 6cd126f266..afd93ed0fb 100644
--- a/apps/snmptrapd_handlers.c
+++ b/apps/snmptrapd_handlers.c
@@ -1112,6 +1112,12 @@ snmp_input(int op, netsnmp_session *session,
*/
if (pdu->trap_type == SNMP_TRAP_ENTERPRISESPECIFIC) {
trapOidLen = pdu->enterprise_length;
+ /*
+ * Drop packets that would trigger an out-of-bounds trapOid[]
+ * access.
+ */
+ if (trapOidLen < 1 || trapOidLen > OID_LENGTH(trapOid) - 2)
+ return 1;
memcpy(trapOid, pdu->enterprise, sizeof(oid) * trapOidLen);
if (trapOid[trapOidLen - 1] != 0) {
trapOid[trapOidLen++] = 0;

1
meta-networking/recipes-protocols/net-snmp/net-snmp_5.9.3.bb
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@ -28,6 +28,7 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/net-snmp/net-snmp-${PV}.tar.gz \
file://0001-ac_add_search_path.m4-keep-consistent-between-32bit.patch \ file://0001-ac_add_search_path.m4-keep-consistent-between-32bit.patch \
file://CVE-2022-44792-CVE-2022-44793.patch \ file://CVE-2022-44792-CVE-2022-44793.patch \
file://0001-unload_all_mibs-fix-memory-leak-by-freeing-tclist.patch \ file://0001-unload_all_mibs-fix-memory-leak-by-freeing-tclist.patch \
file://CVE-2025-68615.patch \
" "
SRC_URI[sha256sum] = "2097f29b7e1bf3f1300b4bae52fa2308d0bb8d5d3998dbe02f9462a413a2ef0a" SRC_URI[sha256sum] = "2097f29b7e1bf3f1300b4bae52fa2308d0bb8d5d3998dbe02f9462a413a2ef0a"