Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox < 91 and Thunderbird < 91.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade librewolfUpgrade thunderbirdUpgrade firefox | Aug 22, 2024 | Aug 17, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 17, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Feb 22, 2022 | Aug 17, 2021 |
| Mfsa2021 33 | — | Upgrade to Mozilla Firefox version 91.0 | Aug 12, 2021 | Aug 10, 2021 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 91.0 | Aug 12, 2021 | Aug 11, 2021 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade web/browser/firefox to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4 | Dec 13, 2021 | Aug 17, 2021 |
| Suse | — | Upgrade mozillafirefox-develUpgrade mozillathunderbird-translations-commonUpgrade mozillathunderbirdUpgrade mozillafirefox-branding-sleUpgrade mozillathunderbird-translations-otherUpgrade mozillafirefox-translations-otherUpgrade mozillafirefox-branding-sledUpgrade mozillafirefox-branding-upstreamUpgrade mozillafirefoxUpgrade rust-cbindgenUpgrade mozillafirefox-translations-common | Sep 23, 2021 | Aug 11, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Aug 12, 2021 | Aug 11, 2021 |
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