linux-cve-announce - CVE-2025-38454: ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a

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Message-ID: <2025072505-CVE-2025-38454-8908@gregkh>
Date: Fri, 25 Jul 2025 17:28:16 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38454: ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp()

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

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

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

ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp()

Use pr_warn() instead of dev_warn() when 'pdev' is NULL to avoid a
potential NULL pointer dereference.

The Linux kernel CVE team has assigned CVE-2025-38454 to this issue.


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

	Issue introduced in 6.12 with commit 20869176d7a7509bad9ea6b895469aebea9c8f21 and fixed in 6.12.39 with commit e14bffc90866596ba19ffe549f199d7870da4241
	Issue introduced in 6.12 with commit 20869176d7a7509bad9ea6b895469aebea9c8f21 and fixed in 6.15.7 with commit ef84c94d11ff972ecc3507f1ed092046bf6204b2
	Issue introduced in 6.12 with commit 20869176d7a7509bad9ea6b895469aebea9c8f21 and fixed in 6.16-rc6 with commit 043faef334a1f3d96ae88e1b7618bfa2b4946388

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-2025-38454
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/isa/ad1816a/ad1816a.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/e14bffc90866596ba19ffe549f199d7870da4241
	https://git.kernel.org/stable/c/ef84c94d11ff972ecc3507f1ed092046bf6204b2
	https://git.kernel.org/stable/c/043faef334a1f3d96ae88e1b7618bfa2b4946388