CVE-2024-50005

HIGH EPSS 12.7%
Published Oct 21, 20241y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
12.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥6.5  –  <6.6.55
linuxlinux_kernel*≥6.7  –  <6.10.14
linuxlinux_kernel*≥6.11  –  <6.11.3
linuxlinux_kernel6.12any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2
    Patch