linux-cve-announce - CVE-2022-49283: firmware: sysfb: fix platform-device leak in error path

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Message-ID: <2025022632-CVE-2022-49283-e19b@gregkh>
Date: Wed, 26 Feb 2025 02:58:08 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49283: firmware: sysfb: fix platform-device leak in error path

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

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

firmware: sysfb: fix platform-device leak in error path

Make sure to free the platform device also in the unlikely event that
registration fails.

The Linux kernel CVE team has assigned CVE-2022-49283 to this issue.


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

	Issue introduced in 5.15 with commit 8633ef82f101c040427b57d4df7b706261420b94 and fixed in 5.15.33 with commit b3e38f939ab4d0d86f56bff3362c3f88c4b2ad32
	Issue introduced in 5.15 with commit 8633ef82f101c040427b57d4df7b706261420b94 and fixed in 5.16.19 with commit bb7fcbe80a013dc883181dc818c407d38558f76c
	Issue introduced in 5.15 with commit 8633ef82f101c040427b57d4df7b706261420b94 and fixed in 5.17.2 with commit fed4df558b8cdb6f3beea38a7c977f118f082b0d
	Issue introduced in 5.15 with commit 8633ef82f101c040427b57d4df7b706261420b94 and fixed in 5.18 with commit 202c08914ba50dd324e42d5ad99535a89f242560
	Issue introduced in 5.15.17 with commit 71db96193317626954073c24344d5cf4759e0af3

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-2022-49283
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/firmware/sysfb_simplefb.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/b3e38f939ab4d0d86f56bff3362c3f88c4b2ad32
	https://git.kernel.org/stable/c/bb7fcbe80a013dc883181dc818c407d38558f76c
	https://git.kernel.org/stable/c/fed4df558b8cdb6f3beea38a7c977f118f082b0d
	https://git.kernel.org/stable/c/202c08914ba50dd324e42d5ad99535a89f242560