vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-23960)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Feb 26, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Feb 26, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue was found in Firefox before version 85.0 and Thunderbird before version 78.7. Performing garbage collection on re-declared JavaScript variables resulted in a use-after-poison, and a potentially exploitable crash.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-23960
- https://attackerkb.com/topics/CVE-2021-23960
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
- URL-https://security.archlinux.org/ASA-202102-1
- URL-https://security.archlinux.org/ASA-202102-2
- URL-https://www.mozilla.org/security/advisories/mfsa2021-03/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-04/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-05/
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