linux-cve-announce - CVE-2025-39762: drm/amd/display: add null check

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Message-ID: <2025091146-CVE-2025-39762-a8e0@gregkh>
Date: Thu, 11 Sep 2025 18:53:02 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-39762: drm/amd/display: add null check

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

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

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

drm/amd/display: add null check

[WHY]
Prevents null pointer dereferences to enhance function robustness

[HOW]
Adds early null check and return false if invalid.

The Linux kernel CVE team has assigned CVE-2025-39762 to this issue.


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

	Fixed in 6.15.11 with commit 13895744e2c639324cf3cb18f2ba4e3f400dd0dd
	Fixed in 6.16.2 with commit 10d97cc1a14ef1f611e156b0b27e8b226e103cc2
	Fixed in 6.17-rc1 with commit 158b9201c17fc93ed4253c2f03b77fd2671669a1

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-2025-39762
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/display/dc/core/dc.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/13895744e2c639324cf3cb18f2ba4e3f400dd0dd
	https://git.kernel.org/stable/c/10d97cc1a14ef1f611e156b0b27e8b226e103cc2
	https://git.kernel.org/stable/c/158b9201c17fc93ed4253c2f03b77fd2671669a1