Use After Free Affecting kernel-debug package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELDEBUG-8239728
- published 22 Oct 2024
- disclosed 21 Oct 2024
Introduced: 21 Oct 2024
CVE-2024-50005 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-debug.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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
- https://access.redhat.com/security/cve/CVE-2024-50005
- https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a
- https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
- https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013
- https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2