# CVE-2022-38476: Mozilla Thunderbird and 1 other: Use After Free CVE-2022-38476 is fixed in 9 products on 2 platforms, first by RHSA-2022:6175, released August 24, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-38476 - Priority: High - CVSS: 8.8 (Important) - EPSS: 0.0086 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 24, 2022 - Weakness: CWE-416: Use After Free - Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-38476 ## Description A data race could occur in the PK11_ChangePW function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR < 102.2 and Thunderbird < 102.2. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Windows apps | Mozilla Thunderbird (en-US) | 102.3.0 | [Mozilla Thunderbird (en-US) 102.3.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-102.3.0.md) | Sep 14, 2022 | | Linux | firefox RHEL 8 | 0:91.13.0-1.el8_6 | [RHSA-2022:6175](https://patchblox.com/security/data/fix/linux/rhsa-2022-6175.md) | Aug 24, 2022 | | Linux | firefox RHEL 9 | 0:91.13.0-1.el9_0 | [RHSA-2022:6174](https://patchblox.com/security/data/fix/linux/rhsa-2022-6174.md) | Aug 24, 2022 | | Linux | firefox almalinux 8 | 91.13.0-1.el8_6.alma | [ALSA-2022:6175](https://patchblox.com/security/data/fix/linux/alsa-2022-6175.md) | Aug 24, 2022 | | Linux | firefox almalinux 9 | 91.13.0-1.el9_0.alma | [ALSA-2022:6174](https://patchblox.com/security/data/fix/linux/alsa-2022-6174.md) | Aug 24, 2022 | | Linux | firefox ol 8 | 0:91.13.0-1.0.1.el8_6 | [ELSA-2022-6175](https://patchblox.com/security/data/fix/linux/elsa-2022-6175.md) | Aug 25, 2022 | | Linux | firefox ol 9 | 0:91.13.0-1.0.1.el9_0 | [ELSA-2022-6174](https://patchblox.com/security/data/fix/linux/elsa-2022-6174.md) | Aug 25, 2022 | | Linux | firefox rocky 8 | 0:91.13.0-1.el8_6 | [RLSA-2022:6175](https://patchblox.com/security/data/fix/linux/rlsa-2022-6175.md) | Aug 24, 2022 | | Linux | firefox-esr Debian 12.15 (bookworm) | 102.2.0esr-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 13.5 (trixie) | 102.2.0esr-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 14 | 102.2.0esr-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:102.2.0-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | thunderbird Debian 13.5 (trixie) | 1:102.2.0-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | thunderbird Debian 14 | 1:102.2.0-1 | [DEBIAN-CVE-2022-38476](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38476.md) | Dec 22, 2022 | | Linux | thunderbird RHEL 8 | 0:91.13.0-1.el8_6 | [RHSA-2022:6164](https://patchblox.com/security/data/fix/linux/rhsa-2022-6164.md) | Aug 24, 2022 | | Linux | thunderbird RHEL 9 | 0:91.13.0-1.el9_0 | [RHSA-2022:6165](https://patchblox.com/security/data/fix/linux/rhsa-2022-6165.md) | Aug 24, 2022 | | Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [thunderbird 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [thunderbird 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [thunderbird 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | | Linux | thunderbird almalinux 8 | 91.13.0-1.el8_6.alma | [ALSA-2022:6164](https://patchblox.com/security/data/fix/linux/alsa-2022-6164.md) | Aug 24, 2022 | | Linux | thunderbird almalinux 9 | 91.13.0-1.el9_0.alma | [ALSA-2022:6165](https://patchblox.com/security/data/fix/linux/alsa-2022-6165.md) | Aug 24, 2022 | | Linux | thunderbird ol 8 | 0:91.13.0-1.0.1.el8_6 | [ELSA-2022-6164](https://patchblox.com/security/data/fix/linux/elsa-2022-6164.md) | Aug 25, 2022 | | Linux | thunderbird ol 9 | 0:91.13.0-1.0.1.el9_0 | [ELSA-2022-6165](https://patchblox.com/security/data/fix/linux/elsa-2022-6165.md) | Aug 25, 2022 | | Linux | thunderbird rocky 8 | 0:91.13.0-1.el8_6 | [RLSA-2022:6164](https://patchblox.com/security/data/fix/linux/rlsa-2022-6164.md) | Aug 24, 2022 | | Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:102.2.2+build1-0ubuntu0.18.04.1 | [xul-ext-lightning 1:102.2.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-102.2.2-build1-0ubuntu0.18.04.1.md) | Aug 31, 2022 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:102.2.2+build1-0ubuntu0.20.04.1 | [xul-ext-lightning 1:102.2.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-102.2.2-build1-0ubuntu0.20.04.1.md) | Dec 22, 2022 | | Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:102.2.2+build1-0ubuntu0.22.04.1 | [xul-ext-lightning 1:102.2.2+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-102.2.2-build1-0ubuntu0.22.04.1.md) | Dec 22, 2022 | --- Data as of 2026-11-08T13:06:02Z UTC. 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