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Vulnerability DatabaseCVE-2022-49881
CVE-2022-49881:
Linux Kernel vulnerability analysis and mitigation
Overview
A memory leak vulnerability (CVE-2022-49881) was identified in the Linux kernel's wifi cfg80211 subsystem. The vulnerability was discovered and published on May 1, 2025, affecting various versions of the Linux kernel from 4.15 up to 6.1 rc4. The issue received a CVSS v3.1 base score of 5.5 (MEDIUM) (NVD).
Technical details
The vulnerability exists in the queryregdbfile() function where the alpha2 parameter is duplicated using kmemdup() and should be freed in regdbfwcb(). However, if requestfirmwarenowait() fails, regdbfwcb() is not called, resulting in a memory leak. The vulnerability has been assigned CWE-401 (Missing Release of Memory after Effective Lifetime) (NVD, Wiz).
Impact
The vulnerability can lead to memory leaks in the Linux kernel, potentially causing system resource exhaustion over time if repeatedly triggered (Wiz).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through patches that fix the memory leak in the queryregdbfile() function. Multiple patch versions have been released to address this issue across different kernel versions (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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