linux-cve-announce - CVE-2022-49432: powerpc/xics: fix refcount leak in icp_opal

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Message-ID: <2025022656-CVE-2022-49432-12c6@gregkh>
Date: Wed, 26 Feb 2025 03:11:46 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49432: powerpc/xics: fix refcount leak in icp_opal_init()

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

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

powerpc/xics: fix refcount leak in icp_opal_init()

The of_find_compatible_node() function returns a node pointer with
refcount incremented, use of_node_put() on it when done.

The Linux kernel CVE team has assigned CVE-2022-49432 to this issue.


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

	Fixed in 4.9.318 with commit 977dbc81d0f866ef63b93c127b7404f07734b3cc
	Fixed in 4.14.283 with commit 53f3f7f73e609b934083f896cb7ca2c2cb009b9f
	Fixed in 4.19.247 with commit 1d5c8cea85fb1680eae8d645b96b92146cb4633c
	Fixed in 5.4.198 with commit 537a317e5ff45d1f5a0ecaf6a0d7c8043c878cb1
	Fixed in 5.10.121 with commit 6a61a97106279c2aa16fbbb2a171fd5dde127d23
	Fixed in 5.15.46 with commit df802880a7f9cd96b921b00639b00871f18a9a57
	Fixed in 5.17.14 with commit 2357bd7499a81c70b460e2191852bbfc7b63c354
	Fixed in 5.18.3 with commit 9a42bc2494fadb453de00ce61042e588563ddc6d
	Fixed in 5.19 with commit 5dd9e27ea4a39f7edd4bf81e9e70208e7ac0b7c9

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-2022-49432
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/powerpc/sysdev/xics/icp-opal.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/977dbc81d0f866ef63b93c127b7404f07734b3cc
	https://git.kernel.org/stable/c/53f3f7f73e609b934083f896cb7ca2c2cb009b9f
	https://git.kernel.org/stable/c/1d5c8cea85fb1680eae8d645b96b92146cb4633c
	https://git.kernel.org/stable/c/537a317e5ff45d1f5a0ecaf6a0d7c8043c878cb1
	https://git.kernel.org/stable/c/6a61a97106279c2aa16fbbb2a171fd5dde127d23
	https://git.kernel.org/stable/c/df802880a7f9cd96b921b00639b00871f18a9a57
	https://git.kernel.org/stable/c/2357bd7499a81c70b460e2191852bbfc7b63c354
	https://git.kernel.org/stable/c/9a42bc2494fadb453de00ce61042e588563ddc6d
	https://git.kernel.org/stable/c/5dd9e27ea4a39f7edd4bf81e9e70208e7ac0b7c9