linux-cve-announce - CVE-2022-49758: reset: uniphier-glue: Fix possible null-ptr-deref

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Message-ID: <2025032702-CVE-2022-49758-10e5@gregkh>
Date: Thu, 27 Mar 2025 17:43:16 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49758: reset: uniphier-glue: Fix possible null-ptr-deref

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

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

reset: uniphier-glue: Fix possible null-ptr-deref

It will cause null-ptr-deref when resource_size(res) invoked,
if platform_get_resource() returns NULL.

The Linux kernel CVE team has assigned CVE-2022-49758 to this issue.


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

	Issue introduced in 4.19 with commit 499fef09a3237497906084da3eede0185fc9abb8 and fixed in 5.15.91 with commit 95de286200b2a046da01c4aeba02ae9220d68ca4
	Issue introduced in 4.19 with commit 499fef09a3237497906084da3eede0185fc9abb8 and fixed in 6.1.9 with commit 633bad3dc81ce2aa561f704ec091e49eb647bd0b
	Issue introduced in 4.19 with commit 499fef09a3237497906084da3eede0185fc9abb8 and fixed in 6.2 with commit 3a2390c6777e3f6662980c6cfc25cafe9e4fef98

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-2022-49758
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/reset/reset-uniphier-glue.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/95de286200b2a046da01c4aeba02ae9220d68ca4
	https://git.kernel.org/stable/c/633bad3dc81ce2aa561f704ec091e49eb647bd0b
	https://git.kernel.org/stable/c/3a2390c6777e3f6662980c6cfc25cafe9e4fef98