CVE-2022-2652

Use of Externally-Controlled Format String in umlaeute/v4l2loopback

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).

Affected

umlaeute · umlaeute/v4l2loopback

CVSS v3.1 NVD

6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

CVSS v3.0 HUNTR

7.3 HIGHCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L

EPSS

0.33% chance of exploitation in the next 30 days, 25th percentile

Published

2022-08-04

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://huntr.dev/bounties/1b055da5-7a9e-4409-99d7-030280d242d5

Security advisories

• umlaeute/v4l2loopback/commit/e4cd225557486c420f6a34411f98c575effd43dd

References

• CVE Record
• NVD entry