Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: workqueue: Put the pwq after detaching the rescuer from the pool The commit 68f83057b913("workqueue: Reap workers via kthread_stop() and remove detach_completion") adds code to reap the normal workers but mistakenly does not handle the rescuer and also removes the code waiting for the rescuer in put_unbound_pool(), which caused a use-after-free bug reported by Cheung Wall. To avoid the use-after-free bug, the pool’s reference must be held until the detachment is complete. Therefore, move the code that puts the pwq after detaching the rescuer from the pool.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 68f83057b913467a999e1bf9e0da6a119668f769 before e7c16028a424dd35be1064a68fa318be4359310f; affected 68f83057b913467a999e1bf9e0da6a119668f769 before 835b69c868f53f959d4986bbecd561ba6f38e492; affected 68f83057b913467a999e1bf9e0da6a119668f769 before e76946110137703c16423baf6ee177b751a34b7e |
| Linux / Linux | affected 6.11; unaffected 0 before 6.11; unaffected 6.12.16 through 6.12.*; unaffected 6.13.4 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e7c16028a424dd35be1064a68fa318be4359310f
- https://git.kernel.org/stable/c/835b69c868f53f959d4986bbecd561ba6f38e492
- https://git.kernel.org/stable/c/e76946110137703c16423baf6ee177b751a34b7e
ADP enrichment
No English description supplied.
No references supplied.