linux-cve-announce - CVE-2022-49135: drm/amd/display: Fix memory leak

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Message-ID: <2025022606-CVE-2022-49135-adff@gregkh>
Date: Wed, 26 Feb 2025 02:55:40 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49135: drm/amd/display: Fix memory leak

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

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

drm/amd/display: Fix memory leak

[why]
Resource release is needed on the error handling path
to prevent memory leak.

[how]
Fix this by adding kfree on the error handling path.

The Linux kernel CVE team has assigned CVE-2022-49135 to this issue.


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

	Fixed in 5.15.34 with commit 7e10369c72db7a0e2f77b2e306aadc07aef6b07a
	Fixed in 5.16.20 with commit 3ce1497add6d17b48cc9df65095bd20202d93994
	Fixed in 5.17.3 with commit 9d0bef3cc22cf250278ed45b829f062a00af9e27
	Fixed in 5.18 with commit 5d5c6dba2b43e28845d7d7ed32a36802329a5f52

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-2022-49135
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/amdgpu_dm/amdgpu_dm_debugfs.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/7e10369c72db7a0e2f77b2e306aadc07aef6b07a
	https://git.kernel.org/stable/c/3ce1497add6d17b48cc9df65095bd20202d93994
	https://git.kernel.org/stable/c/9d0bef3cc22cf250278ed45b829f062a00af9e27
	https://git.kernel.org/stable/c/5d5c6dba2b43e28845d7d7ed32a36802329a5f52