SB2026072768 - Improper resource shutdown or release in Linux kernel core

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-64485)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/426a9947a38d272d0e19c031658da68e31128667
• https://git.kernel.org/stable/c/4a60127debb9e370d6c0e22a307326b624a141f3
• https://git.kernel.org/stable/c/b27a75d42044d9d4709095617730b91b1c4af423