Bug 2517851 (CVE-2026-74976) - CVE-2026-74976 firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component
Summary: CVE-2026-74976 firefox: thunderbird: JIT miscompilation in the JavaScript Eng...
Keywords:
Status: NEW
Alias: CVE-2026-74976
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-18 12:55 UTC by OSIDB Bzimport
Modified: 2026-09-08 13:30 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-2026:58897 0 None None None 2026-08-24 10:06:10 UTC
Red Hat Product Errata RHSA-2026:58898 0 None None None 2026-08-24 09:36:27 UTC
Red Hat Product Errata RHSA-2026:58899 0 None None None 2026-08-24 09:35:18 UTC
Red Hat Product Errata RHSA-2026:64813 0 None None None 2026-09-08 04:05:49 UTC
Red Hat Product Errata RHSA-2026:64814 0 None None None 2026-09-08 03:27:25 UTC
Red Hat Product Errata RHSA-2026:65103 0 None None None 2026-09-08 08:14:33 UTC
Red Hat Product Errata RHSA-2026:65105 0 None None None 2026-09-08 08:04:46 UTC
Red Hat Product Errata RHSA-2026:65110 0 None None None 2026-09-08 07:36:57 UTC
Red Hat Product Errata RHSA-2026:65111 0 None None None 2026-09-08 07:26:08 UTC
Red Hat Product Errata RHSA-2026:65158 0 None None None 2026-09-08 11:47:57 UTC
Red Hat Product Errata RHSA-2026:65159 0 None None None 2026-09-08 09:46:20 UTC
Red Hat Product Errata RHSA-2026:65160 0 None None None 2026-09-08 09:54:06 UTC
Red Hat Product Errata RHSA-2026:65442 0 None None None 2026-09-08 13:30:48 UTC

Description OSIDB Bzimport 2026-08-18 12:55:18 UTC 
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
Comment 1 errata-xmlrpc 2026-08-24 09:35:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:58899 https://access.redhat.com/errata/RHSA-2026:58899
Comment 2 errata-xmlrpc 2026-08-24 09:36:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:58898 https://access.redhat.com/errata/RHSA-2026:58898
Comment 3 errata-xmlrpc 2026-08-24 10:06:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:58897 https://access.redhat.com/errata/RHSA-2026:58897
Comment 4 errata-xmlrpc 2026-09-08 03:27:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:64814 https://access.redhat.com/errata/RHSA-2026:64814
Comment 5 errata-xmlrpc 2026-09-08 04:05:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:64813 https://access.redhat.com/errata/RHSA-2026:64813
Comment 6 errata-xmlrpc 2026-09-08 07:26:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:65111 https://access.redhat.com/errata/RHSA-2026:65111
Comment 7 errata-xmlrpc 2026-09-08 07:36:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:65110 https://access.redhat.com/errata/RHSA-2026:65110
Comment 8 errata-xmlrpc 2026-09-08 08:04:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:65105 https://access.redhat.com/errata/RHSA-2026:65105
Comment 9 errata-xmlrpc 2026-09-08 08:14:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:65103 https://access.redhat.com/errata/RHSA-2026:65103
Comment 10 errata-xmlrpc 2026-09-08 09:46:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:65159 https://access.redhat.com/errata/RHSA-2026:65159
Comment 11 errata-xmlrpc 2026-09-08 09:54:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:65160 https://access.redhat.com/errata/RHSA-2026:65160
Comment 12 errata-xmlrpc 2026-09-08 11:47:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:65158 https://access.redhat.com/errata/RHSA-2026:65158
Comment 13 errata-xmlrpc 2026-09-08 13:30:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:65442 https://access.redhat.com/errata/RHSA-2026:65442
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