cve-2024-50005
Vulnerability from cvelistv5
Published
2024-10-21 18:53
Modified
2024-12-19 09:31
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2Patch
Impacted products
Vendor Product Version
Linux Linux Version: e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8
Version: e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8
Version: e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8
Version: e2c3e6f53a7a8a00ffeed127cfd1b397c3b016f8
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   Linux Linux Version: 6.5
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