CVE-2023-53648 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 7

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel2.6.28 — 4.14.322+7
▶Debianlinux/linux_kernel< 5.10.191-1+3
▶CVEListV5linux/linuxda3cec35dd3c31d8706db4bf379372ce70d92118 — 809af7bb4219bdeef0dbb8b2ed700d6516d13fe9+9
▶debiandebian/linux< linux 6.1.52-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-523c-3cg7-7hhv: In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer smatch error: sound/↗2025-10-07
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OSV
CVE-2023-53648: In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer smatch error: sound/pc↗2025-10-07
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📋Vendor Advisories

2
Red Hat
kernel: ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer↗2025-10-07
▶
Debian
CVE-2023-53648: linux - In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97:...↗2023
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