linux-cve-announce - CVE-2022-49570: gpio: gpio-xilinx: Fix integer overflow

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Message-ID: <2025022606-CVE-2022-49570-468c@gregkh>
Date: Wed, 26 Feb 2025 03:22:13 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49570: gpio: gpio-xilinx: Fix integer overflow

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

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

gpio: gpio-xilinx: Fix integer overflow

Current implementation is not able to configure more than 32 pins
due to incorrect data type. So type casting with unsigned long
to avoid it.

The Linux kernel CVE team has assigned CVE-2022-49570 to this issue.


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

	Issue introduced in 5.14 with commit 02b3f84d9080b0f4297f31258307f626a43faba5 and fixed in 5.15.58 with commit e129e5486b981d324057e6986059f852658b0d00
	Issue introduced in 5.14 with commit 02b3f84d9080b0f4297f31258307f626a43faba5 and fixed in 5.18.15 with commit 6f16a5390640807dde420ee5ccbc4c95577aea6a
	Issue introduced in 5.14 with commit 02b3f84d9080b0f4297f31258307f626a43faba5 and fixed in 5.19 with commit 32c094a09d5829ad9b02cdf667569aefa8de0ea6

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-2022-49570
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/gpio/gpio-xilinx.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/e129e5486b981d324057e6986059f852658b0d00
	https://git.kernel.org/stable/c/6f16a5390640807dde420ee5ccbc4c95577aea6a
	https://git.kernel.org/stable/c/32c094a09d5829ad9b02cdf667569aefa8de0ea6