linux-cve-announce - CVE-2022-49324: mips: cpc: Fix refcount leak in mips_cpc_default_phys

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Message-ID: <2025022638-CVE-2022-49324-2bbc@gregkh>
Date: Wed, 26 Feb 2025 03:09:58 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49324: mips: cpc: Fix refcount leak in mips_cpc_default_phys_base

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

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

mips: cpc: Fix refcount leak in mips_cpc_default_phys_base

Add the missing of_node_put() to release the refcount incremented
by of_find_compatible_node().

The Linux kernel CVE team has assigned CVE-2022-49324 to this issue.


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

	Fixed in 4.14.283 with commit bed702566dcdb6ebe300bc0c62bf3600cf4d5874
	Fixed in 4.19.247 with commit 961ee8a6eeef4632a215d995d837b204f8c7c2d4
	Fixed in 5.4.198 with commit cc0aed22d33ced9e266c50bdf1cbe668c5acfdf8
	Fixed in 5.10.122 with commit c667b3872a4c435a3f29d4e15971cd8c378b0043
	Fixed in 5.15.47 with commit 1699ec1bfb59304a788901474f6bb003f7831b61
	Fixed in 5.17.15 with commit 8f843cdfc202caaa5d67db3395d893e56362e43a
	Fixed in 5.18.4 with commit aae6b4bb63c694bc91714412718f15468407fe51
	Fixed in 5.19 with commit 4107fa700f314592850e2c64608f6ede4c077476

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-2022-49324
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/kernel/mips-cpc.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/bed702566dcdb6ebe300bc0c62bf3600cf4d5874
	https://git.kernel.org/stable/c/961ee8a6eeef4632a215d995d837b204f8c7c2d4
	https://git.kernel.org/stable/c/cc0aed22d33ced9e266c50bdf1cbe668c5acfdf8
	https://git.kernel.org/stable/c/c667b3872a4c435a3f29d4e15971cd8c378b0043
	https://git.kernel.org/stable/c/1699ec1bfb59304a788901474f6bb003f7831b61
	https://git.kernel.org/stable/c/8f843cdfc202caaa5d67db3395d893e56362e43a
	https://git.kernel.org/stable/c/aae6b4bb63c694bc91714412718f15468407fe51
	https://git.kernel.org/stable/c/4107fa700f314592850e2c64608f6ede4c077476