linux-cve-announce - CVE-2023-53842: ASoC: codecs: wcd-mbhc-v2: fix resource leaks on component remove

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025120957-CVE-2023-53842-d1e7@gregkh>
Date: Tue,  9 Dec 2025 10:31:26 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53842: ASoC: codecs: wcd-mbhc-v2: fix resource leaks on component remove

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

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

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

ASoC: codecs: wcd-mbhc-v2: fix resource leaks on component remove

The MBHC resources must be released on component probe failure and
removal so can not be tied to the lifetime of the component device.

This is specifically needed to allow probe deferrals of the sound card
which otherwise fails when reprobing the codec component:

    snd-sc8280xp sound: ASoC: failed to instantiate card -517
    genirq: Flags mismatch irq 299. 00002001 (mbhc sw intr) vs. 00002001 (mbhc sw intr)
    wcd938x_codec audio-codec: Failed to request mbhc interrupts -16
    wcd938x_codec audio-codec: mbhc initialization failed
    wcd938x_codec audio-codec: ASoC: error at snd_soc_component_probe on audio-codec: -16
    snd-sc8280xp sound: ASoC: failed to instantiate card -16

The Linux kernel CVE team has assigned CVE-2023-53842 to this issue.


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

	Issue introduced in 5.14 with commit 0e5c9e7ff899808afa4e2b08c2e6ccc469bed681 and fixed in 5.15.123 with commit 90ab6446eb522e31421b77bf8f45714f5668f9a3
	Issue introduced in 5.14 with commit 0e5c9e7ff899808afa4e2b08c2e6ccc469bed681 and fixed in 6.1.42 with commit 17feff71d06c96dea1fa72451c20d411e9d5ac8f
	Issue introduced in 5.14 with commit 0e5c9e7ff899808afa4e2b08c2e6ccc469bed681 and fixed in 6.4.7 with commit ce4059e1c0aca972446e06c09ee09a0d2ba5df54
	Issue introduced in 5.14 with commit 0e5c9e7ff899808afa4e2b08c2e6ccc469bed681 and fixed in 6.5 with commit a5475829adcc600bc69ee9ff7c9e3e43fb4f8d30

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-2023-53842
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/wcd-mbhc-v2.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/90ab6446eb522e31421b77bf8f45714f5668f9a3
	https://git.kernel.org/stable/c/17feff71d06c96dea1fa72451c20d411e9d5ac8f
	https://git.kernel.org/stable/c/ce4059e1c0aca972446e06c09ee09a0d2ba5df54
	https://git.kernel.org/stable/c/a5475829adcc600bc69ee9ff7c9e3e43fb4f8d30