# CVE-2022-29918: Mozilla Firefox ESR and 2 others: Mozilla developers Gabriele Svelto, Randell Jesup and the Mozilla Fuzzing Team reported memory safety…

CVE-2022-29918 is fixed in 5 products on 2 platforms, first by firefox 100.0+build2-0ubuntu0.18.04.1, released May 6, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-29918
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0056
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 6, 2022
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-29918

## Description

Mozilla developers Gabriele Svelto, Randell Jesup and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 99. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 100.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox (en-US) | 100.0.1 | [Mozilla Firefox (en-US) 100.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-100.0.1.md) | May 19, 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 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | [firefox 100.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-100.0-build2-0ubuntu0.18.04.1.md) | May 6, 2022 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | [firefox 100.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-100.0-build2-0ubuntu0.20.04.1.md) | May 6, 2022 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | [firefox-geckodriver 100.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-100.0-build2-0ubuntu0.18.04.1.md) | May 6, 2022 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 100.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-100.0-build2-0ubuntu0.20.04.1.md) | May 6, 2022 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 100.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-100.0-build2-0ubuntu0.18.04.1.md) | May 6, 2022 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 100.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-100.0-build2-0ubuntu0.20.04.1.md) | May 6, 2022 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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