vulnerability
Arch Linux: Information disclosure (CVE-2021-29982)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Aug 17, 2021 | Jul 11, 2025 | Mar 25, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Aug 17, 2021
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A security issue has been found in Firefox and Thunderbird before version 91. Due to incorrect JIT optimization, it incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-29982
- https://attackerkb.com/topics/CVE-2021-29982
- https://bugzilla.mozilla.org/show_bug.cgi?id=1715318
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-16441
- https://security.archlinux.org/ASA-202108-14
- https://security.gentoo.org/glsa/202202-03
- https://www.mozilla.org/security/advisories/mfsa2021-33/
- https://www.mozilla.org/security/advisories/mfsa2021-36/
- CWE-772
- EUVD-EUVD-2021-16441
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.