CVE-2024-50005

Description

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.

Reserved 2024-10-21 | Published 2024-10-21 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before e676e4ea76bbe7f1156d8c326b9b6753849481c2
affected

e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before 540138377b22f601f06f55ebfa3ca171dcab471a
affected

e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before d18f669461811dfe2915d5554ab2a9834f810013
affected

e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8 before bff1709b3980bd7f80be6786f64cc9a9ee9e56da
affected

Default status
affected

6.5
affected

Any version before 6.5
unaffected

6.6.55
unaffected

6.10.14
unaffected

6.11.3
unaffected

6.12
unaffected

References

git.kernel.org/...c/e676e4ea76bbe7f1156d8c326b9b6753849481c2

git.kernel.org/...c/540138377b22f601f06f55ebfa3ca171dcab471a

git.kernel.org/...c/d18f669461811dfe2915d5554ab2a9834f810013

git.kernel.org/...c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da

cve.org (CVE-2024-50005)

nvd.nist.gov (CVE-2024-50005)

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