CVE-2021-29972

high

Published — · Modified —

CVSS v3

—

CVSS v2

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VIR risk

8.0

Description

A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. This vulnerability affects Firefox < 90.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-29972

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-29972.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202107-20

OS impact

OS	Version	Status	Fixed in
arch		fixed	`90.0-1`
sles		affected
debian	sid	fixed	`90.0-1`

References

https://security.archlinux.org/ASA-202107-20
https://www.suse.com/security/cve/CVE-2021-29972.html
https://security-tracker.debian.org/tracker/CVE-2021-29972

Verify integrity in audit chain (admin only). AS-IS.