linux-cve-announce - CVE-2022-50281: MIPS: SGI-IP27: Fix platform-device leak in bridge_platform

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Message-ID: <2025091507-CVE-2022-50281-f141@gregkh>
Date: Mon, 15 Sep 2025 16:21:23 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50281: MIPS: SGI-IP27: Fix platform-device leak in bridge_platform_create()

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

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

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

MIPS: SGI-IP27: Fix platform-device leak in bridge_platform_create()

In error case in bridge_platform_create after calling
platform_device_add()/platform_device_add_data()/
platform_device_add_resources(), release the failed
'pdev' or it will be leak, call platform_device_put()
to fix this problem.

Besides, 'pdev' is divided into 'pdev_wd' and 'pdev_bd',
use platform_device_unregister() to release sgi_w1
resources when xtalk-bridge registration fails.

The Linux kernel CVE team has assigned CVE-2022-50281 to this issue.


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

	Issue introduced in 5.5 with commit 5dc76a96e95ae041c1d8e52714bd77576b35919b and fixed in 5.10.150 with commit da2aecef866b476438d02c662507a0e4e818da9d
	Issue introduced in 5.5 with commit 5dc76a96e95ae041c1d8e52714bd77576b35919b and fixed in 5.15.75 with commit 93296e7ab774230b7c36541dead10b6da39b650f
	Issue introduced in 5.5 with commit 5dc76a96e95ae041c1d8e52714bd77576b35919b and fixed in 5.19.17 with commit d7ac29e60d0ff71e9e414af595b8c92800f7fa90
	Issue introduced in 5.5 with commit 5dc76a96e95ae041c1d8e52714bd77576b35919b and fixed in 6.0.3 with commit 48025893b3e31b917ad654d28d23fff66681cac4
	Issue introduced in 5.5 with commit 5dc76a96e95ae041c1d8e52714bd77576b35919b and fixed in 6.1 with commit 11bec9cba4de06b3c0e9e4041453c2caaa1cbec1

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-2022-50281
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:
	arch/mips/sgi-ip27/ip27-xtalk.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/da2aecef866b476438d02c662507a0e4e818da9d
	https://git.kernel.org/stable/c/93296e7ab774230b7c36541dead10b6da39b650f
	https://git.kernel.org/stable/c/d7ac29e60d0ff71e9e414af595b8c92800f7fa90
	https://git.kernel.org/stable/c/48025893b3e31b917ad654d28d23fff66681cac4
	https://git.kernel.org/stable/c/11bec9cba4de06b3c0e9e4041453c2caaa1cbec1