A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library.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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade librewolf | Aug 22, 2024 | Aug 5, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 5, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Feb 22, 2022 | Aug 5, 2021 |
| Mfsa2021 28 | — | Upgrade to Mozilla Firefox version 90.0Upgrade to the latest version of Mozilla Firefox | Jul 14, 2021 | Jul 13, 2021 |
| Ubuntu | — | Upgrade firefox | Jul 17, 2021 | Jul 16, 2021 |
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