Improper resource shutdown or release in Linux kernel - CVE-2026-64485
Published: July 27, 2026
Vulnerability identifier: #VU139446
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64485
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in snd_compr_task_new() in sound/core/compress_offload.c when creating compression tasks and allocating file descriptors. A local user can trigger an error condition after a successful task_create() callback to cause a denial of service.
The issue can leak driver-allocated resources when later dma-buffer validation or file descriptor reservation fails, and the dual-file-descriptor allocation path can incorrectly report success after the task has already been discarded.
Affected software
Linux kernel
How to mitigate CVE-2026-64485
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3