Bug 2533774 (CVE-2026-92021) - CVE-2026-92021 firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component
Summary: CVE-2026-92021 firefox: thunderbird: Use-after-free in the JavaScript Engine:...
Keywords:
Status: NEW
Alias: CVE-2026-92021
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 13:00 UTC by OSIDB Bzimport
Modified: 2026-09-30 14:19 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:69461 0 None None None 2026-09-21 17:34:33 UTC
Red Hat Product Errata RHSA-2026:69462 0 None None None 2026-09-21 19:49:38 UTC
Red Hat Product Errata RHSA-2026:70642 0 None None None 2026-09-24 01:58:25 UTC
Red Hat Product Errata RHSA-2026:71652 0 None None None 2026-09-24 17:37:26 UTC
Red Hat Product Errata RHSA-2026:73130 0 None None None 2026-09-29 12:15:54 UTC
Red Hat Product Errata RHSA-2026:73971 0 None None None 2026-09-30 14:19:51 UTC

Description OSIDB Bzimport 2026-09-15 13:00:36 UTC 
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16.
Comment 1 Jon Orris 2026-09-21 17:34:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:69461 https://access.redhat.com/errata/RHSA-2026:69461
Comment 2 Jon Orris 2026-09-21 17:34:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:69461 https://access.redhat.com/errata/RHSA-2026:69461
Comment 3 Jon Orris 2026-09-21 19:49:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:69462 https://access.redhat.com/errata/RHSA-2026:69462
Comment 4 Jon Orris 2026-09-24 01:58:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:70642 https://access.redhat.com/errata/RHSA-2026:70642
Comment 5 Jon Orris 2026-09-24 17:37:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:71652 https://access.redhat.com/errata/RHSA-2026:71652
Comment 6 Jon Orris 2026-09-29 12:15:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:73130 https://access.redhat.com/errata/RHSA-2026:73130
Comment 7 Jon Orris 2026-09-30 14:19:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:73971 https://access.redhat.com/errata/RHSA-2026:73971
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