Complete Yocto mirror with license table for TQMa6UL (2038-compliance)
- 264 license table entries with exact download URLs (224/264 resolved) - Complete sources/ directory with all BitBake recipes - Build configuration: tqma6ul-multi-mba6ulx, spaetzle (musl) - Full traceability for Softwarefreigabeantrag - GCC 13.4.0, Linux 6.6.102, U-Boot 2023.04, musl 1.2.4 - License distribution: GPL-2.0 (24), MIT (23), GPL-2.0+ (18), BSD-3 (16)
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From 05e4ba7b0d126eea4c04387dcf40596059ee24af Mon Sep 17 00:00:00 2001
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From: Hangbin Liu <liuhangbin@gmail.com>
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Date: Wed, 5 Jun 2024 11:57:43 +0800
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Subject: [PATCH] libndp: valid route information option length
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RFC 4191 specifies that the Route Information Option Length should be 1, 2,
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or 3, depending on the Prefix Length. A malicious node could potentially
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trigger a buffer overflow and crash the tool by sending an IPv6 router
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advertisement message containing the "Route Information" option with a
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"Length" field larger than 3.
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To address this, add a check on the length field.
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Fixes: 8296a5bf0755 ("add support for Route Information Option (rfc4191)")
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Reported-by: Evgeny Vereshchagin <evverx@gmail.com>
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Suggested-by: Felix Maurer <fmaurer@redhat.com>
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Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
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Signed-off-by: Jiri Pirko <jiri@nvidia.com>
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CVE: CVE-2024-5564
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Upstream-Status: Backport [https://github.com/jpirko/libndp/commit/05e4ba7b0d126eea4c04387dcf40596059ee24af]
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Signed-off-by: Peter Marko <peter.marko@siemens.com>
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---
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libndp/libndp.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/libndp/libndp.c b/libndp/libndp.c
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index 6314717..72ec92e 100644
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--- a/libndp/libndp.c
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+++ b/libndp/libndp.c
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@@ -1231,6 +1231,17 @@ static bool ndp_msg_opt_route_check_valid(void *opt_data)
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*/
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if (((ri->nd_opt_ri_prf_reserved >> 3) & 3) == 2)
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return false;
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+
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+ /* The Length field is 1, 2, or 3 depending on the Prefix Length.
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+ * If Prefix Length is greater than 64, then Length must be 3.
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+ * If Prefix Length is greater than 0, then Length must be 2 or 3.
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+ * If Prefix Length is zero, then Length must be 1, 2, or 3.
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+ */
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+ if (ri->nd_opt_ri_len > 3 ||
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+ (ri->nd_opt_ri_prefix_len > 64 && ri->nd_opt_ri_len != 3) ||
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+ (ri->nd_opt_ri_prefix_len > 0 && ri->nd_opt_ri_len == 1))
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+ return false;
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+
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return true;
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}
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SUMMARY = "Library for IPv6 Neighbor Discovery Protocol"
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HOMEPAGE = "http://libndp.org/"
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LICENSE = "LGPL-2.1-only"
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LIC_FILES_CHKSUM = "file://COPYING;md5=4fbd65380cdd255951079008b364516c"
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SRC_URI = "git://github.com/jpirko/libndp;branch=master;protocol=https \
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file://CVE-2024-5564.patch \
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"
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# tag for v1.8
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SRCREV = "009ce9cd9b950ffa1f4f94c9436027b936850d0c"
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S = "${WORKDIR}/git"
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inherit autotools
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