Bug 2489215 (CVE-2026-12312) - CVE-2026-12312 firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12
Summary: CVE-2026-12312 firefox: thunderbird: Memory safety bug fixed in Thunderbird E...
Keywords:
Status: NEW
Alias: CVE-2026-12312
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-16 14:01 UTC by OSIDB Bzimport
Modified: 2026-06-25 15:58 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-2026:27717 0 None None None 2026-06-22 03:03:26 UTC
Red Hat Product Errata RHSA-2026:27733 0 None None None 2026-06-22 03:50:58 UTC
Red Hat Product Errata RHSA-2026:27734 0 None None None 2026-06-22 04:18:41 UTC
Red Hat Product Errata RHSA-2026:29940 0 None None None 2026-06-25 15:58:55 UTC

Description OSIDB Bzimport 2026-06-16 14:01:44 UTC 
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.
Comment 1 errata-xmlrpc 2026-06-22 03:03:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:27717 https://access.redhat.com/errata/RHSA-2026:27717
Comment 2 errata-xmlrpc 2026-06-22 03:50:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:27733 https://access.redhat.com/errata/RHSA-2026:27733
Comment 3 errata-xmlrpc 2026-06-22 04:18:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27734 https://access.redhat.com/errata/RHSA-2026:27734
Comment 4 errata-xmlrpc 2026-06-25 15:58:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:29940 https://access.redhat.com/errata/RHSA-2026:29940
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