An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbird | May 4, 2022 | Dec 8, 2021 |
| Alpine Linux | — | Upgrade thunderbirdUpgrade firefox-esrUpgrade firefoxUpgrade librewolf | Aug 22, 2024 | Dec 8, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Dec 8, 2021 |
| Centos_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade thunderbird | Dec 9, 2021 | Dec 8, 2021 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Dec 30, 2021 | Dec 8, 2021 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox. | Feb 22, 2022 | Dec 8, 2021 |
| Mfsa2021 52 | — | Upgrade to Mozilla Firefox version 95.0Upgrade to the latest version of Mozilla Firefox | Dec 8, 2021 | Dec 7, 2021 |
| Mfsa2021 53 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 91.4 | Dec 8, 2021 | Dec 7, 2021 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 91.4 | Dec 8, 2021 | Dec 7, 2021 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4Upgrade mail/thunderbird to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4 | Jan 19, 2022 | Dec 8, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Dec 9, 2021 | Dec 7, 2021 |
| Redhat_linux | — | No solution existsUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsource | Dec 9, 2021 | Dec 8, 2021 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Mar 12, 2024 | Dec 8, 2021 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaFirefoxUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-branding-upstream | Dec 11, 2021 | Dec 8, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Dec 10, 2021 | Dec 8, 2021 |
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