Security Vulnerabilities fixed in firefox RHSA-2021:3755

Description

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.2.0 ESR. Security Fix(es): Mozilla: Use-after-free in MessageTask (CVE-2021-38496) Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498) Mozilla: Use-after-free in MessageTask (CVE-2021-38496) Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498) 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. SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

Affected Applications

firefox

CVE References

CVE-2021-38498 CVE-2021-38497 CVE-2021-38496 CVE-2021-38501 CVE-2021-38500 CVE-2021-32810

Other References

https://access.redhat.com/errata/RHSA-2021:3755