When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Sep 7, 2023 | Sep 4, 2023 |
| Alpine Linux | — | Upgrade firefoxUpgrade firefox-esrUpgrade thunderbird | Aug 22, 2024 | Sep 11, 2023 |
| Centos_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | Sep 5, 2023 | Sep 4, 2023 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Jul 27, 2026 | Jul 27, 2026 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | Feb 21, 2024 | Sep 11, 2023 |
| Mfsa2023 34 | — | Upgrade to Mozilla Firefox version 117.0Upgrade to the latest version of Mozilla Firefox | Aug 30, 2023 | Aug 29, 2023 |
| Mfsa2023 36 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.2 | Aug 30, 2023 | Aug 29, 2023 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 115.2 | Sep 5, 2023 | Aug 29, 2023 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | May 21, 2024 | Aug 29, 2023 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefox-debugsourceUpgrade firefox-debuginfoNo solution existsUpgrade thunderbird-debugsourceUpgrade thunderbird | Sep 5, 2023 | Sep 4, 2023 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird | Mar 5, 2024 | Sep 11, 2023 |
| Suse | — | Upgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-other | Sep 6, 2023 | Sep 5, 2023 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Aug 31, 2023 | Aug 30, 2023 |
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