RHSA-2022:1286 — Security Advisory

Red Hat Security Advisory: firefox security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · April 8, 2022

Updated · November 22, 2025

Topic

An update for firefox is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 91.8.0 ESR.

Security Fix(es):

  • Mozilla: Use-after-free in NSSToken objects (CVE-2022-1097)

  • Mozilla: Out of bounds write due to unexpected WebAuthN Extensions (CVE-2022-28281)

  • Mozilla: Memory safety bugs fixed in Firefox 99 and Firefox ESR 91.8 (CVE-2022-28289)

  • Mozilla: Use-after-free after VR Process destruction (CVE-2022-1196)

  • Mozilla: Use-after-free in DocumentL10n::TranslateDocument (CVE-2022-28282)

  • Mozilla: Incorrect AliasSet used in JIT Codegen (CVE-2022-28285)

  • Mozilla: Denial of Service via complex regular expressions (CVE-2022-24713)

  • Mozilla: iframe contents could be rendered outside the border (CVE-2022-28286)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Related CVEs

RHSA-2022:1286 — Red Hat Security Advisory: firefox security update | PulseLinux