CVE-2023-53648
Not scored
ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer
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.
Exploit probability
0.2%
Published
October 7, 2025
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2023-53648
View original source
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53648.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53648