CVE-2026-64488: ALSA: aoa: check snd_ctl_new1() return value

From: Greg Kroah-Hartman <[email protected]>

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

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

ALSA: aoa: check snd_ctl_new1() return value

snd_ctl_new1() can return NULL when memory allocation fails. In
layout.c, the function does not check the return value before
dereferencing ctl->id.name or passing to aoa_snd_ctl_add(), which can
lead to a NULL pointer dereference.

Add NULL checks after snd_ctl_new1() calls and return early if any
fails.

The Linux kernel CVE team has assigned CVE-2026-64488 to this issue.


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

	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 5.10.261 with commit b0154ebc6dc552c389a574b1e221d728e10346e7
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 5.15.212 with commit d62624fe256b2d0d13454c78cbfc70ff5d954dc7
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 6.1.178 with commit e5e8c4508d95af82f9b4d065f658e5476a8e9bc8
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 6.6.145 with commit 2ee9c46fd2dcd529cef18e37636ee12f5c3dbedd
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 6.12.97 with commit d73067e2bbf3775a495d9f38e38d0a3cf53ee790
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 6.18.39 with commit fd786466889e4a6e6de0f4462bd0068edea63960
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 7.1.4 with commit e47f2a341adbac001b6f5d0211b0cd1c1668637b
	Issue introduced in 2.6.18 with commit f3d9478b2ce468c3115b02ecae7e975990697f15 and fixed in 7.2-rc1 with commit 8df560fefe6fed6a20b7e06720eeaeccec349ac0

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-2026-64488
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/aoa/fabrics/layout.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/b0154ebc6dc552c389a574b1e221d728e10346e7
	https://git.kernel.org/stable/c/d62624fe256b2d0d13454c78cbfc70ff5d954dc7
	https://git.kernel.org/stable/c/e5e8c4508d95af82f9b4d065f658e5476a8e9bc8
	https://git.kernel.org/stable/c/2ee9c46fd2dcd529cef18e37636ee12f5c3dbedd
	https://git.kernel.org/stable/c/d73067e2bbf3775a495d9f38e38d0a3cf53ee790
	https://git.kernel.org/stable/c/fd786466889e4a6e6de0f4462bd0068edea63960
	https://git.kernel.org/stable/c/e47f2a341adbac001b6f5d0211b0cd1c1668637b
	https://git.kernel.org/stable/c/8df560fefe6fed6a20b7e06720eeaeccec349ac0