CVE-2024-26654
kernel: ALSA: sh: aica: reorder cleanup operations to avoid UAF bugs
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 1, 2024
Updated · August 5, 2026
Description
A vulnerability was found in the ALSA sh driver of Linux Kernel, when the snd_pcm_substream closes and deallocates aica_channel, which can still be accessed by the spu_dma_work scheduled by dreamcastcard->timer and del_timer() returns directly, allowing the worker thread to be rescheduled during timer handling potentially leads to an Use-After-Free.
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-416 · Use After Free