Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mac802154: Fix potential RCU dereference issue in mac802154_scan_worker In the `mac802154_scan_worker` function, the `scan_req->type` field was accessed after the RCU read-side critical section was unlocked. According to RCU usage rules, this is illegal and can lead to unpredictable behavior, such as accessing memory that has been updated or causing use-after-free issues. This possible bug was identified using a static analysis tool developed by myself, specifically designed to detect RCU-related issues. To address this, the `scan_req->type` value is now stored in a local variable `scan_req_type` while still within the RCU read-side critical section. The `scan_req_type` is then used after the RCU lock is released, ensuring that the type value is safely accessed without violating RCU rules.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before e676e4ea76bbe7f1156d8c326b9b6753849481c2; affected e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before 540138377b22f601f06f55ebfa3ca171dcab471a; affected e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before d18f669461811dfe2915d5554ab2a9834f810013; affected e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before bff1709b3980bd7f80be6786f64cc9a9ee9e56da |
| Linux / Linux | affected 6.5; unaffected 0 before 6.5; unaffected 6.6.55 through 6.6.*; unaffected 6.10.14 through 6.10.*; unaffected 6.11.3 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2
- https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a
- https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013
- https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
ADP enrichment
No English description supplied.
No references supplied.