CVE-2026-64488

What the bug is

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.

Where it lives

The fix touches these files. If the subsystem is one you do not use, the practical exposure is lower, though the package is still the vulnerable one.

sound/aoa/fabrics/layout.c

What this is

AOA (Apple Onboard Audio) ALSA DRIVERMAINTAINERS section matched on sound/aoa/ · linuxppc-dev@lists.ozlabs.org · Maintained

Kernel module

none to look for. The file would have gone into snd_aoa_fabric_layout, and Debian does not compile it into that module, so finding snd_aoa_fabric_layout in lsmod would say nothing about this CVE.

Check it on the machine

grep -wE 'CONFIG_SND_AOA|CONFIG_SND_AOA_FABRIC_LAYOUT' /boot/config-$(uname -r)

Reads the booted kernel's own configuration, on the machine and nowhere else. =y is built in, =m is a module, and an is not set line means the code is not there.

Show whether Debian builds this, per release

Debian does not build this code. In 5 releases below, every kernel flavour Debian publishes has the switch off, so the vulnerable file is compiled into no kernel binary Debian ships.

• bookworm, trixie, forky, sid, bookworm · linux-6.12n

n

not enabled on any flavour - this release does not build the code

Build switches

CONFIG_SND_AOA, CONFIG_SND_AOA_FABRIC_LAYOUT

Reads as

all on means the file is compiled; any one off means it is not.

From the configuration Debian publishes for every kernel flavour it builds. It covers only the architectures Debian ships a linux-config package for, and nothing about a kernel you built yourself. Debian's own status above stays authoritative about the source package.MAINTAINERS kbuild Makefiles Debian linux-config packages

Signals

Published

2026-07-25 (3 months ago)source

CVSS

no vector published, unrated

Attack vector

not published

EPSS

0.18%, higher than 7.5% of all CVEssource

CISA KEV

not listedthe KEV catalogue

Debian urgency

not yet assignedsource

Subsystem

sound/aoa

Upstream fixes

The versions the CNA records as introducing and fixing this, and the commit for each. source

Introduced	Fixed in	Commit
2.6.18	5.10.261	b0154ebc6dc5
2.6.18	5.15.212	d62624fe256b
2.6.18	6.1.178	e5e8c4508d95
2.6.18	6.6.145	2ee9c46fd2dc
2.6.18	6.12.97	d73067e2bbf3
2.6.18	6.18.39	fd786466889e
2.6.18	7.1.4	e47f2a341adb
2.6.18	7.2	8df560fefe6f

Debian advisories