vulnerability
Arch Linux: Arbitrary code execution (CVE-2020-26974)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jan 7, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jan 7, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue was found in Firefox before 84.0 and Thunderbird before 78.6. When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-26974
- https://attackerkb.com/topics/CVE-2020-26974
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1681022
- URL-https://security.archlinux.org/ASA-202012-23
- URL-https://security.archlinux.org/ASA-202012-25
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-54/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-55/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-56/
- CWE-787
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