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CVE-2023-52904

ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate()

MEDIUM
5.5
CVSS Score
Published: August 21, 2024 at 06:10 AM UTC
Updated: June 17, 2026 at 06:43 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate() The subs function argument may be NULL, so do not use it before the NULL check.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.15.152 ≤ v < 5.15.168291e9da91403e0e628d7692b5ed505100e7b77065.15.152bfd36b1d1869859af7ba94dc95ec05e74f40d0b7e1e0a181aea375edfae2f9a59070f95d904980d1
Vendor states this is fixed in 92a9c0ad86d47ff4cce899012e355c400f02cfb8 (fixed)
Vendor states this is fixed in a474d4ad59cd4642d1b7e3a6c08cef9eca0992c8 (fixed)
Vendor states this is fixed in f57204edc10760c935d8d36ea999dc8acf018030 (fixed)
Affected range stops below 5.15.168, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/92a9c0ad86d47ff4cce899012e355c400f02cfb8
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a474d4ad59cd4642d1b7e3a6c08cef9eca0992c8
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f57204edc10760c935d8d36ea999dc8acf018030

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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