# CVE-2022-42928: Mozilla Firefox and 4 others: NULL Pointer Dereference CVE-2022-42928 is fixed in 13 products on 2 platforms, first by Mozilla Firefox (en-US) 106.0, released October 19, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-42928 - Priority: High - CVSS: 8.8 (Important) - EPSS: 0.0089 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 20, 2022 - Weakness: CWE-476: NULL Pointer Dereference - Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-42928 ## Description Certain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 106, Firefox ESR < 102.4, and Thunderbird < 102.4. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Windows apps | Mozilla Firefox (en-US) | 106.0 | [Mozilla Firefox (en-US) 106.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-106.0.md) | Oct 19, 2022 | | Windows apps | Mozilla Firefox ESR (en-US) | 115.4.0 | [Mozilla Firefox ESR (en-US) 115.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-115.4.0.md) | Oct 17, 2023 | | Windows apps | Mozilla Thunderbird (en-US) | 102.6.0 | [Mozilla Thunderbird (en-US) 102.6.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-102.6.0.md) | Dec 12, 2022 | | Linux | firefox RHEL 8 | 0:102.4.0-1.el8_6 | [RHSA-2022:7070](https://patchblox.com/security/data/fix/linux/rhsa-2022-7070.md) | Oct 20, 2022 | | Linux | firefox RHEL 9 | 0:102.4.0-1.el9_0 | [RHSA-2022:7071](https://patchblox.com/security/data/fix/linux/rhsa-2022-7071.md) | Oct 20, 2022 | | Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 106.0.2+build1-0ubuntu0.18.04.1 | [firefox 106.0.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-106.0.2-build1-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | firefox Ubuntu 20.04 LTS (focal) | 106.0.2+build1-0ubuntu0.20.04.1 | [firefox 106.0.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-106.0.2-build1-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | firefox almalinux 8 | 102.4.0-1.el8_6.alma | [ALSA-2022:7070](https://patchblox.com/security/data/fix/linux/alsa-2022-7070.md) | Oct 20, 2022 | | Linux | firefox almalinux 9 | 102.4.0-1.el9_0.alma | [ALSA-2022:7071](https://patchblox.com/security/data/fix/linux/alsa-2022-7071.md) | Oct 20, 2022 | | Linux | firefox ol 8 | 0:102.4.0-1.0.1.el8_6 | [ELSA-2022-7070](https://patchblox.com/security/data/fix/linux/elsa-2022-7070.md) | Oct 26, 2022 | | Linux | firefox ol 9 | 0:102.4.0-1.0.1.el9_0 | [ELSA-2022-7071](https://patchblox.com/security/data/fix/linux/elsa-2022-7071.md) | Oct 21, 2022 | | Linux | firefox rocky 8 | 0:102.4.0-1.el8_6 | [RLSA-2022:7070](https://patchblox.com/security/data/fix/linux/rlsa-2022-7070.md) | Oct 20, 2022 | | Linux | firefox-esr Debian 12.15 (bookworm) | 102.4.0esr-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 13.5 (trixie) | 102.4.0esr-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 14 | 102.4.0esr-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 106.0.2+build1-0ubuntu0.18.04.1 | [firefox-geckodriver 106.0.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-106.0.2-build1-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 106.0.2+build1-0ubuntu0.20.04.1 | [firefox-geckodriver 106.0.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-106.0.2-build1-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 106.0.2+build1-0ubuntu0.18.04.1 | [firefox-mozsymbols 106.0.2+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-106.0.2-build1-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 106.0.2+build1-0ubuntu0.20.04.1 | [firefox-mozsymbols 106.0.2+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-106.0.2-build1-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:102.4.0-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | thunderbird Debian 13.5 (trixie) | 1:102.4.0-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | thunderbird Debian 14 | 1:102.4.0-1 | [DEBIAN-CVE-2022-42928](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42928.md) | Dec 22, 2022 | | Linux | thunderbird RHEL 8 | 0:102.4.0-1.el8_6 | [RHSA-2022:7190](https://patchblox.com/security/data/fix/linux/rhsa-2022-7190.md) | Oct 25, 2022 | | Linux | thunderbird RHEL 9 | 0:102.4.0-1.el9_0 | [RHSA-2022:7178](https://patchblox.com/security/data/fix/linux/rhsa-2022-7178.md) | Oct 25, 2022 | | Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [thunderbird 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [thunderbird 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [thunderbird 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | | Linux | thunderbird almalinux 8 | 102.4.0-1.el8_6.alma | [ALSA-2022:7190](https://patchblox.com/security/data/fix/linux/alsa-2022-7190.md) | Oct 25, 2022 | | Linux | thunderbird almalinux 9 | 102.4.0-1.el9_0.alma | [ALSA-2022:7178](https://patchblox.com/security/data/fix/linux/alsa-2022-7178.md) | Oct 25, 2022 | | Linux | thunderbird ol 8 | 0:102.4.0-1.0.1.el8_6 | [ELSA-2022-7190](https://patchblox.com/security/data/fix/linux/elsa-2022-7190.md) | Oct 27, 2022 | | Linux | thunderbird ol 9 | 0:102.4.0-1.el9_0 | [ELSA-2022-7178](https://patchblox.com/security/data/fix/linux/elsa-2022-7178.md) | Oct 27, 2022 | | Linux | thunderbird rocky 8 | 0:102.4.0-1.el8_6 | [RLSA-2022:7190](https://patchblox.com/security/data/fix/linux/rlsa-2022-7190.md) | Oct 25, 2022 | | Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:102.4.2+build2-0ubuntu0.18.04.1 | [xul-ext-lightning 1:102.4.2+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-102.4.2-build2-0ubuntu0.18.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:102.4.2+build2-0ubuntu0.20.04.1 | [xul-ext-lightning 1:102.4.2+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-102.4.2-build2-0ubuntu0.20.04.1.md) | Oct 26, 2022 | | Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:102.4.2+build2-0ubuntu0.22.04.1 | [xul-ext-lightning 1:102.4.2+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-102.4.2-build2-0ubuntu0.22.04.1.md) | Oct 26, 2022 | --- Data as of 2026-11-08T06:59:42Z UTC. 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