# firefox 98.0+build3-0ubuntu0.18.04.2: firefox 98.0+build3-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)

firefox 98.0+build3-0ubuntu0.18.04.2, released March 8, 2022, fixes 15 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-98.0-build3-0ubuntu0.18.04.2
- Platform: Linux
- Released: Mar 8, 2022
- Priority: Urgent (Closes CVE-2022-26384, rated Critical)
- CVEs: 15, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | Ubuntu 18.04.6 LTS (bionic) | 98.0+build3-0ubuntu0.18.04.2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-26384](https://patchblox.com/security/data/cve/CVE-2022-26384.md) | Urgent | Mozilla Thunderbird and 4 others: Protection Mechanism Failure | 9.8 | 0.0097 |  |
| [CVE-2022-26381](https://patchblox.com/security/data/cve/CVE-2022-26381.md) | Urgent | Mozilla Thunderbird and 4 others: Use After Free | 9.8 | 0.0087 |  |
| [CVE-2022-26383](https://patchblox.com/security/data/cve/CVE-2022-26383.md) | Urgent | Mozilla Thunderbird and 4 others: User Interface (UI) Misrepresentation of Critical Information | 9.8 | 0.0073 |  |
| [CVE-2022-26387](https://patchblox.com/security/data/cve/CVE-2022-26387.md) | Urgent | Mozilla Thunderbird and 4 others: Time-of-check Time-of-use (TOCTOU) Race Condition | 9.8 | 0.0066 |  |
| [CVE-2022-22822](https://patchblox.com/security/data/cve/CVE-2022-22822.md) | High | xul-ext-lightning: addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0548 |  |
| [CVE-2021-45960](https://patchblox.com/security/data/cve/CVE-2021-45960.md) | High | expat: In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) placesin the storeAtts function in xmlparse.c can... | 9.8 | 0.0467 |  |
| [CVE-2021-46143](https://patchblox.com/security/data/cve/CVE-2021-46143.md) | High | expat: In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integeroverflow exists for m_groupSize. | 9.8 | 0.0447 |  |
| [CVE-2022-22823](https://patchblox.com/security/data/cve/CVE-2022-22823.md) | High | thunderbird-mozsymbols: build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0387 |  |
| [CVE-2022-22824](https://patchblox.com/security/data/cve/CVE-2022-22824.md) | High | expat: defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0387 |  |
| [CVE-2022-22826](https://patchblox.com/security/data/cve/CVE-2022-22826.md) | High | libxmltok1: nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0318 |  |
| [CVE-2022-22827](https://patchblox.com/security/data/cve/CVE-2022-22827.md) | High | thunderbird-gnome-support: storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0318 |  |
| [CVE-2022-22825](https://patchblox.com/security/data/cve/CVE-2022-22825.md) | High | libxmltok1: lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. | 9.8 | 0.0299 |  |
| [CVE-2022-0843](https://patchblox.com/security/data/cve/CVE-2022-0843.md) | High | Mozilla Firefox ESR and 2 others: Out-of-bounds Write | 8.8 | 0.0057 |  |
| [CVE-2022-26385](https://patchblox.com/security/data/cve/CVE-2022-26385.md) | Routine | Mozilla Firefox ESR and 2 others: Use After Free | 6.5 | 0.0058 |  |
| [CVE-2022-26382](https://patchblox.com/security/data/cve/CVE-2022-26382.md) | Routine | Mozilla Firefox ESR and 2 others: Observable Discrepancy | 4.3 | 0.0051 |  |

---

Data as of 2026-11-12T07:53:35Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.