CVE-2026-58091 Kernel use-after-free via the SNDCTL_DSP_SYNCSTART ioctl

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

EUVD-2026-66236

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

PT-2026-81929

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description A use-after-free issue exists in the implementation of an ioctl, which occurs when the system attempts to acquire locks on all channels in a sync group. If locki...