Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2022-2652
CVE-2022-2652:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2022-2652 is a format string vulnerability discovered in the v4l2loopback kernel module affecting versions up to 0.12.6. The vulnerability was related to the way format strings in the card label are crafted, potentially leading to kernel stack memory leaks (NVD).
Technical details
The vulnerability is classified as CWE-134 (Use of Externally-Controlled Format String) with a CVSS v3.1 base score of 6.0 (MEDIUM) according to NVD, and 7.3 (HIGH) according to huntr.dev. The vulnerability vector is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H, indicating local access is required with high privileges but no user interaction (NVD).
Impact
The vulnerability could lead to kernel stack memory leaks and potential Denial of Service (DoS) due to the v4l2loopback kernel module crashing when providing the card label on request, particularly when using multiple %s modifiers in sequence (NVD).
Mitigation and workarounds
A patch has been released that adds explicit format specifiers to printf() invocations, fixing the string format vulnerability. The fix was implemented in version 0.12.6 of the v4l2loopback module (Github Patch).
Additional resources
Source: This report was generated using AI
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