# CVE-2022-28282: Mozilla Thunderbird and 4 others: Use After Free CVE-2022-28282 is fixed in 13 products on 2 platforms, first by Mozilla Firefox (en-US) 99.0, released April 5, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-28282 - Priority: High - CVSS: 8.8 (Important) - EPSS: 0.0218 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 5, 2022 - Weakness: CWE-416: Use After Free - Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-28282 ## Description By using a link with rel="localization" a use-after-free could have been triggered by destroying an object during JavaScript execution and then referencing the object through a freed pointer, leading to a potential exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Windows apps | Mozilla Firefox (en-US) | 99.0 | [Mozilla Firefox (en-US) 99.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-99.0.md) | Apr 5, 2022 | | Windows apps | Mozilla Firefox ESR (en-US) | 102.0 | [Mozilla Firefox ESR (en-US) 102.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-102.0.md) | Jun 23, 2022 | | Windows apps | Mozilla Thunderbird (en-US) | 91.8.0 | [Mozilla Thunderbird (en-US) 91.8.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-91.8.0.md) | Apr 5, 2022 | | Linux | firefox RHEL 8 | 0:91.8.0-1.el8_5 | [RHSA-2022:1287](https://patchblox.com/security/data/fix/linux/rhsa-2022-1287.md) | Apr 8, 2022 | | Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 99.0+build2-0ubuntu0.18.04.2 | [firefox 99.0+build2-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-99.0-build2-0ubuntu0.18.04.2.md) | Apr 6, 2022 | | Linux | firefox Ubuntu 20.04 LTS (focal) | 99.0+build2-0ubuntu0.20.04.2 | [firefox 99.0+build2-0ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-99.0-build2-0ubuntu0.20.04.2.md) | Apr 6, 2022 | | Linux | firefox Ubuntu 22.04.1 LTS (jammy) | 1:1snap1-0ubuntu1 | [firefox 1:1snap1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-firefox-1-1snap1-0ubuntu1.md) | Apr 6, 2022 | | Linux | firefox almalinux 8 | 91.8.0-1.el8_5.alma | [ALSA-2022:1287](https://patchblox.com/security/data/fix/linux/alsa-2022-1287.md) | Apr 8, 2022 | | Linux | firefox ol 8 | 0:91.8.0-1.0.1.el8_5 | [ELSA-2022-1287](https://patchblox.com/security/data/fix/linux/elsa-2022-1287.md) | Apr 8, 2022 | | Linux | firefox rocky 8 | 0:91.8.0-1.el8_5 | [RLSA-2022:1287](https://patchblox.com/security/data/fix/linux/rlsa-2022-1287.md) | Apr 8, 2022 | | Linux | firefox-esr Debian 12.15 (bookworm) | 91.8.0esr-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 13.5 (trixie) | 91.8.0esr-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 14 | 91.8.0esr-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 99.0+build2-0ubuntu0.18.04.2 | [firefox-geckodriver 99.0+build2-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-99.0-build2-0ubuntu0.18.04.2.md) | Apr 6, 2022 | | Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 99.0+build2-0ubuntu0.20.04.2 | [firefox-geckodriver 99.0+build2-0ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-99.0-build2-0ubuntu0.20.04.2.md) | Apr 6, 2022 | | Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 99.0+build2-0ubuntu0.18.04.2 | [firefox-mozsymbols 99.0+build2-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-99.0-build2-0ubuntu0.18.04.2.md) | Apr 6, 2022 | | Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 99.0+build2-0ubuntu0.20.04.2 | [firefox-mozsymbols 99.0+build2-0ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-99.0-build2-0ubuntu0.20.04.2.md) | Apr 6, 2022 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:91.8.0-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | thunderbird Debian 13.5 (trixie) | 1:91.8.0-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | thunderbird Debian 14 | 1:91.8.0-1 | [DEBIAN-CVE-2022-28282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-28282.md) | Dec 22, 2022 | | Linux | thunderbird RHEL 8 | 0:91.8.0-1.el8_5 | [RHSA-2022:1301](https://patchblox.com/security/data/fix/linux/rhsa-2022-1301.md) | Apr 11, 2022 | | Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [thunderbird 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [thunderbird 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | | Linux | thunderbird almalinux 8 | 91.8.0-1.el8_5.alma | [ALSA-2022:1301](https://patchblox.com/security/data/fix/linux/alsa-2022-1301.md) | Apr 11, 2022 | | Linux | thunderbird ol 8 | 0:91.8.0-1.0.1.el8_5 | [ELSA-2022-1301](https://patchblox.com/security/data/fix/linux/elsa-2022-1301.md) | Apr 11, 2022 | | Linux | thunderbird rocky 8 | 0:91.8.0-1.el8_5 | [RLSA-2022:1301](https://patchblox.com/security/data/fix/linux/rlsa-2022-1301.md) | Apr 11, 2022 | | Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:91.8.1+build1-0ubuntu0.18.04.1 | [xul-ext-lightning 1:91.8.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-91.8.1-build1-0ubuntu0.18.04.1.md) | Apr 6, 2022 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:91.8.1+build1-0ubuntu0.20.04.1 | [xul-ext-lightning 1:91.8.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-91.8.1-build1-0ubuntu0.20.04.1.md) | Apr 6, 2022 | --- Data as of 2026-11-08T00:53:09Z UTC. 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