CVE-2023-52904
kernel: ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 21, 2024
Updated · November 21, 2025
Description
A vulnerability was found in the snd_usb_pcm_has_fixed_rate() function in the Linux Kernel's Advanced Linux Sound Architecture (ALSA) subsystem for USB audio. This issue could allow an attacker with local access and low privileges to manipulate the audio subsystem by interacting with USB audio devices or crafting specific audio-related function calls that pass a NULL pointer to the vulnerable function. This could cause a NULL pointer dereference in the ALSA subsystem, leading to a kernel panic, requiring a system restart to recover.
Statement
Red Hat Enterprise Linux is not impacted by this CVE, as this vulnerability does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue and no further action or mitigation is necessary for systems running this operating system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE-476 · NULL Pointer Dereference