🛡️ CVE-2022-2652 on Debian — v4l2loopback

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Depending on the way the format strings in the card label are crafted it's possible to leak kernel stack memory. There is also the possibility for DoS due to the v4l2loopback kernel module crashing when providing the card label on request (reproduce e.g. with many %s modifiers in a row).

Distribution advisory

This page covers CVE-2022-2652 as tracked by Debian, for the package v4l2loopback. The fix is available in version 0.12.7-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Weakness class

DEBIAN-CVE-2022-2652 is classified as CWE-134: Externally Controlled Format String. User input is used as a format string, letting an attacker read or write memory through format specifiers.

Affected software

DEBIAN-CVE-2022-2652 is recorded against 1 package.

  • v4l2loopback (fixed in 0.12.7-1)

Timeline and source

Published on 4 August 2022 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2022-2652 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-08-04
Updated 2026-08-12
Modified 2026-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
v4l2loopback — 0.12.7-1

Vulnerability Monitoring

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