linux-cve-announce - CVE-2025-40045: ASoC: codecs: wcd937x: set the comp soundwire port correctly

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Message-ID: <2025102813-CVE-2025-40045-38d3@gregkh>
Date: Tue, 28 Oct 2025 12:48:22 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-40045: ASoC: codecs: wcd937x: set the comp soundwire port correctly

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

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

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

ASoC: codecs: wcd937x: set the comp soundwire port correctly

For some reason we endup with setting soundwire port for
HPHL_COMP and HPHR_COMP as zero, this can potentially result
in a memory corruption due to accessing and setting -1 th element of
port_map array.

The Linux kernel CVE team has assigned CVE-2025-40045 to this issue.


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

	Issue introduced in 6.11 with commit 82be8c62a38c6a44e64ecb29d7a9b5cb35c6cad4 and fixed in 6.12.53 with commit abcd537aae3b84c6d10ad147e99a204bcb56b234
	Issue introduced in 6.11 with commit 82be8c62a38c6a44e64ecb29d7a9b5cb35c6cad4 and fixed in 6.17.3 with commit 1a1ca38392e7e896075afc8905ddaea525ed30f7
	Issue introduced in 6.11 with commit 82be8c62a38c6a44e64ecb29d7a9b5cb35c6cad4 and fixed in 6.18-rc1 with commit 66a940b1bf48a7095162688332d725ba160154eb

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-2025-40045
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:
	sound/soc/codecs/wcd937x.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/abcd537aae3b84c6d10ad147e99a204bcb56b234
	https://git.kernel.org/stable/c/1a1ca38392e7e896075afc8905ddaea525ed30f7
	https://git.kernel.org/stable/c/66a940b1bf48a7095162688332d725ba160154eb