Description (CNA)
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 possibility. On a system with a multiple audio devices, an unprivileged local user can exploit this use-after-free to escalate privileges.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| FreeBSD / FreeBSD | affected 15.1-RELEASE before p3; affected 15.0-RELEASE before p13; affected 14.4-RELEASE before p9 |
CWE
CWE-416
References
ADP enrichment
No English description supplied.
No references supplied.