A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Aug 22, 2024 | Apr 26, 2019 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Apr 26, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Apr 26, 2019 |
| Centos_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | Apr 1, 2019 | Mar 19, 2019 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Mar 21, 2019 | Mar 21, 2019 |
| Freebsd | — | Upgrade libxulUpgrade linux-thunderbirdUpgrade thunderbirdUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade waterfoxUpgrade seamonkeyUpgrade firefoxUpgrade linux-firefox | Mar 20, 2019 | Mar 19, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird. | Apr 3, 2019 | Apr 2, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade firefox | May 1, 2019 | Apr 26, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade firefox | May 30, 2019 | Apr 26, 2019 |
| Mfsa2019 07 | — | Upgrade to Mozilla Firefox version 66.0Upgrade to the latest version of Mozilla Firefox | Mar 20, 2019 | Mar 19, 2019 |
| Mfsa2019 08 | — | Upgrade to Mozilla Firefox ESR version 60.6Upgrade to the latest version of Mozilla Firefox | Mar 20, 2019 | Mar 19, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 60.6Upgrade to the latest version of Mozilla Thunderbird | Mar 26, 2019 | Mar 19, 2019 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 60.6.0-11.4.8.0.1.3.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.6.0-11.4.8.0.1.3.0 on Solaris 11.4 | Apr 17, 2019 | Apr 17, 2019 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Apr 1, 2019 | Mar 20, 2019 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade firefoxUpgrade thunderbird | Mar 21, 2019 | Mar 20, 2019 |
| Suse | — | Upgrade MozillaFirefox-develUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade mozillafirefox-buildsymbolsUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox | Apr 1, 2019 | Mar 19, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Apr 1, 2019 | Mar 19, 2019 |
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