CVE-2026-64485

Summary

In the Linux kernel, the following vulnerability has been resolved:

ALSA: compress: Fix task creation error unwind

snd_compr_task_new() allocates the driver task before validating the returned DMA buffers and reserving file descriptors. When either of those later steps fails, the core frees its task wrapper and DMA-buffer references without calling the driver's task_free() callback. Any driver resources allocated by task_create() are therefore leaked.

The dual-fd allocation path also jumps to cleanup without storing the negative get_unused_fd_flags() result in retval. Since retval still contains the successful task_create() return value, TASK_CREATE can incorrectly report success although the task was discarded.

Preserve the fd allocation errors and call task_free() when failure occurs after a successful task_create() callback.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux04177158cf98a79744937893b100020d77e6f9ac < b27a75d42044d9d4709095617730b91b1c4af423affected
LinuxLinux04177158cf98a79744937893b100020d77e6f9ac < 426a9947a38d272d0e19c031658da68e31128667affected
LinuxLinux04177158cf98a79744937893b100020d77e6f9ac < 4a60127debb9e370d6c0e22a307326b624a141f3affected
LinuxLinux6.13affected
LinuxLinux0 < 6.13unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References