Use After Free The advisory has been revoked - it doesn't affect any version of package firefox (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-FIREFOX-12313876
- published1 Sept 2025
- disclosed20 Sept 2022
Introduced: 20 Sep 2022
CVE-2022-40960 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL.
Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
References
- https://access.redhat.com/security/cve/CVE-2022-40960
- https://access.redhat.com/errata/RHSA-2022:6700
- https://bugzilla.mozilla.org/show_bug.cgi?id=1787633
- https://www.mozilla.org/security/advisories/mfsa2022-40/
- https://www.mozilla.org/security/advisories/mfsa2022-41/
- https://www.mozilla.org/security/advisories/mfsa2022-42/