# CVE-2024-50005: linux: In the Linux kernel, the following vulnerability has been resolved:  mac802154: Fix potential RCU dereference issue i...

CVE-2024-50005 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-50005, released October 21, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-50005
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 21, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.11.4-1 | [DEBIAN-CVE-2024-50005](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50005.md) | Oct 21, 2024 |
| Linux | linux Debian 14 | 6.11.4-1 | [DEBIAN-CVE-2024-50005](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50005.md) | Oct 21, 2024 |

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