linux-cve-announce - CVE-2023-53448: fbdev: imxfb: Removed unneeded release_mem

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Message-ID: <2025100102-CVE-2023-53448-e125@gregkh>
Date: Wed,  1 Oct 2025 13:42:18 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53448: fbdev: imxfb: Removed unneeded release_mem_region

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

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

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

fbdev: imxfb: Removed unneeded release_mem_region

Remove unnecessary release_mem_region from the error path to prevent
mem region from being released twice, which could avoid resource leak
or other unexpected issues.

The Linux kernel CVE team has assigned CVE-2023-53448 to this issue.


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

	Issue introduced in 6.0 with commit b083c22d51148f3d3028291343196471be5d9f36 and fixed in 6.1.42 with commit 6aa851f6276fa08cd59b044bc2b803c49edf58a2
	Issue introduced in 6.0 with commit b083c22d51148f3d3028291343196471be5d9f36 and fixed in 6.4.7 with commit 38282a92c30422836d49e519bd109237f86a0888
	Issue introduced in 6.0 with commit b083c22d51148f3d3028291343196471be5d9f36 and fixed in 6.5 with commit 45fcc058a75bf5d65cf4c32da44a252fbe873cd4

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-2023-53448
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/video/fbdev/imxfb.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/6aa851f6276fa08cd59b044bc2b803c49edf58a2
	https://git.kernel.org/stable/c/38282a92c30422836d49e519bd109237f86a0888
	https://git.kernel.org/stable/c/45fcc058a75bf5d65cf4c32da44a252fbe873cd4