linux-cve-announce - CVE-2023-54254: drm/ttm: Don't leak a resource on eviction error

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Message-ID: <2025123055-CVE-2023-54254-8a3e@gregkh>
Date: Tue, 30 Dec 2025 13:20:20 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54254: drm/ttm: Don't leak a resource on eviction error

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

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

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

drm/ttm: Don't leak a resource on eviction error

On eviction errors other than -EMULTIHOP we were leaking a resource.
Fix.

v2:
- Avoid yet another goto (Andi Shyti)

The Linux kernel CVE team has assigned CVE-2023-54254 to this issue.


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

	Issue introduced in 5.15 with commit 403797925768d9fa870f5b1ebcd20016b397083b and fixed in 5.15.124 with commit 7738335d73d0686ec8995e0448e5d1b48cffb2a4
	Issue introduced in 5.15 with commit 403797925768d9fa870f5b1ebcd20016b397083b and fixed in 6.1.43 with commit e9c44738cb1f537b177cc1beabcf6913690460cd
	Issue introduced in 5.15 with commit 403797925768d9fa870f5b1ebcd20016b397083b and fixed in 6.4.5 with commit 6aea0032380bbb1efebd598ad733d16925167921
	Issue introduced in 5.15 with commit 403797925768d9fa870f5b1ebcd20016b397083b and fixed in 6.5 with commit e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532
	Issue introduced in 5.14.6 with commit 6c68fbafb9cd13e13476043fd9f6e10f792f685a

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-2023-54254
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/ttm/ttm_bo.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/7738335d73d0686ec8995e0448e5d1b48cffb2a4
	https://git.kernel.org/stable/c/e9c44738cb1f537b177cc1beabcf6913690460cd
	https://git.kernel.org/stable/c/6aea0032380bbb1efebd598ad733d16925167921
	https://git.kernel.org/stable/c/e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532