CVE-2023-53648
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedOct 7, 2025
First seenOct 7, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13, 6.4.4 or later
Patches
- git.kernel.org/stable/c/09baf460dfba79ee6a0c72e68ccdbbba84d894df
- git.kernel.org/stable/c/228da1fa124470606ac19783e551f9d51a1e01b0
- git.kernel.org/stable/c/300e26e3e64880de5013eac8831cf44387ef752c
- git.kernel.org/stable/c/5f13d67027fa782096e6aee0db5dce61c4aeb613
- git.kernel.org/stable/c/79597c8bf64ca99eab385115743131d260339da5
- git.kernel.org/stable/c/809af7bb4219bdeef0dbb8b2ed700d6516d13fe9
- git.kernel.org/stable/c/d28b83252e150155b8b8c65b612c555e93c8b45f
- git.kernel.org/stable/c/e4cccff1e7ab6ea30995b6fbbb007d02647e025c
- git.kernel.org/stable/c/f923a582217b198b557756809ffe42ac0fad6adb
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.28 ≤ v < 4.14.322, 4.15 ≤ v < 4.19.291, 4.20 ≤ v < 5.4.251, 5.5 ≤ v < 5.10.188, 5.11 ≤ v < 5.15.121, 5.16 ≤ v < 6.1.39, 6.2 ≤ v < 6.3.13, 6.4 ≤ v < 6.4.4 | 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13, 6.4.4 |
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