CVE-2022-38476

HIGH 7.5CVE-2022-38476 · Published 22/12/2022 · updated 17/06/2026

In short

CVE-2022-38476 is a HIGH (CVSS 7.5) vulnerability affecting firefox esr (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.86%, higher than 58.5% of all vulnerabilities.
Fix: update to 102.2 or later.

Package	Affected versions	Patched versions
firefox esr mozilla	`< 102.2`	`102.2`
thunderbird mozilla	`< 102.2`	`102.2`

Description

A data race could occur in the <code>PK11_ChangePW</code> 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.

References

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2022-34 · Vendor Advisory
mozilla.org/security/advisories/mfsa2022-36 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox esr

mozilla

< 102.2

102.2

thunderbird

mozilla

< 102.2

102.2

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