CVE-2023-53648

EUVD-2025-31972
In the Linux kernel, the following vulnerability has been resolved:

ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer

smatch error:
sound/pci/ac97/ac97_codec.c:2354 snd_ac97_mixer() error:
we previously assumed 'rac97' could be null (see line 2072)

remove redundant assignment, return error if rac97 is NULL.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 5%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
2.6.28 ≤
𝑥
< 4.14.322
linuxlinux_kernel
4.15 ≤
𝑥
< 4.19.291
linuxlinux_kernel
4.20 ≤
𝑥
< 5.4.251
linuxlinux_kernel
5.5 ≤
𝑥
< 5.10.188
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.121
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.39
linuxlinux_kernel
6.2 ≤
𝑥
< 6.3.13
linuxlinux_kernel
6.4 ≤
𝑥
< 6.4.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.148-1
fixed
bookworm (security)
6.1.153-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.237-1
fixed
forky
6.16.9-1
fixed
sid
6.16.11-1
fixed
trixie
6.12.43-1
fixed
trixie (security)
6.12.48-1
fixed
Common Weakness Enumeration
References
https://git.kernel.org/stable/c/09baf460dfba79ee6a0c72e68ccdbbba84d894df
https://git.kernel.org/stable/c/228da1fa124470606ac19783e551f9d51a1e01b0
https://git.kernel.org/stable/c/300e26e3e64880de5013eac8831cf44387ef752c
https://git.kernel.org/stable/c/5f13d67027fa782096e6aee0db5dce61c4aeb613
https://git.kernel.org/stable/c/79597c8bf64ca99eab385115743131d260339da5
https://git.kernel.org/stable/c/809af7bb4219bdeef0dbb8b2ed700d6516d13fe9
https://git.kernel.org/stable/c/d28b83252e150155b8b8c65b612c555e93c8b45f
https://git.kernel.org/stable/c/e4cccff1e7ab6ea30995b6fbbb007d02647e025c
https://git.kernel.org/stable/c/f923a582217b198b557756809ffe42ac0fad6adb