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Vulnerability DatabaseCVE-2022-50415
CVE-2022-50415:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2022-50415 is a vulnerability in the Linux kernel affecting the parisc LED subsystem. The issue was discovered in the starttask() function which fails to check the return value of createsinglethread_workqueue(), potentially leading to a null pointer dereference (NVD, Ubuntu).
Technical details
The vulnerability occurs when starttask() calls createsinglethreadworkqueue() without checking its return value. If createsinglethreadworkqueue() fails and returns NULL, subsequent calls to queuedelayedwork(), queuedelayedworkon(), and queuedelayedwork() continue execution, eventually leading to a null pointer dereference when accessing wq->flags in queue_work() (NVD).
Impact
If exploited, this vulnerability could lead to a system crash due to the null pointer dereference in the kernel's LED subsystem on PA-RISC architecture systems (Ubuntu).
Mitigation and workarounds
The issue has been fixed in multiple Linux kernel versions across different distributions. Ubuntu has released patches for various kernel versions including 5.15.0-69.76 for 22.04 LTS, 5.4.0-144.161 for 20.04 LTS, and 4.15.0-208.220 for 18.04 LTS (Ubuntu).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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