linux-cve-announce - CVE-2025-40289: drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM

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Message-ID: <2025120719-CVE-2025-40289-6833@gregkh>
Date: Sun,  7 Dec 2025 06:52:36 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-40289: drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM

Otherwise accessing them can cause a crash.

The Linux kernel CVE team has assigned CVE-2025-40289 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.12.59 with commit 39a1c8c860e32d775f29917939e87b6a7c08ebb1
	Fixed in 6.17.9 with commit a67a9f99ce1306898d7129a199d42876bc06a0f0
	Fixed in 6.18 with commit 33cc891b56b93cad1a83263eaf2e417436f70c82

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-2025-40289
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_vram_mgr.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/39a1c8c860e32d775f29917939e87b6a7c08ebb1
	https://git.kernel.org/stable/c/a67a9f99ce1306898d7129a199d42876bc06a0f0
	https://git.kernel.org/stable/c/33cc891b56b93cad1a83263eaf2e417436f70c82