From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-cve-announce@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@kernel.org>
Subject: CVE-2026-43369: drm/amd: Fix NULL pointer dereference in device cleanup
Date: Fri, 8 May 2026 16:21:38 +0200 [thread overview]
Message-ID: <2026050829-CVE-2026-43369-60b9@gregkh> (raw)
From: Greg Kroah-Hartman <gregkh@kernel.org>
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
drm/amd: Fix NULL pointer dereference in device cleanup
When GPU initialization fails due to an unsupported HW block
IP blocks may have a NULL version pointer. During cleanup in
amdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and
amdgpu_device_set_cg_state which iterate over all IP blocks and access
adev->ip_blocks[i].version without NULL checks, leading to a kernel
NULL pointer dereference.
Add NULL checks for adev->ip_blocks[i].version in both
amdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent
dereferencing NULL pointers during GPU teardown when initialization has
failed.
(cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)
The Linux kernel CVE team has assigned CVE-2026-43369 to this issue.
Affected and fixed versions
===========================
Issue introduced in 6.18.16 with commit fc58ef30e0a1524ce72a8e873d773ba3b0830c7d and fixed in 6.18.19 with commit 43025c941aced9a9009f9ff20eea4eb78c61deb8
Issue introduced in 6.19.6 with commit 6d7ac4a0ebb6b7bc885274aa8b2bd9971f07013c and fixed in 6.19.9 with commit 767cd24d3c4ae847688877def4891943f6611ecd
Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.
Unaffected versions might change over time as fixes are backported to
older supported kernel versions. The official CVE entry at
https://cve.org/CVERecord/?id=CVE-2026-43369
will be updated if fixes are backported, please check that for the most
up to date information about this issue.
Affected files
==============
The file(s) affected by this issue are:
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
Mitigation
==========
The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes. Individual
changes are never tested alone, but rather are part of a larger kernel
release. Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all. If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8
https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd
https://git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267
reply other threads:[~2026-05-08 14:22 UTC|newest]
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