Bug 2442337 (CVE-2026-2758) - CVE-2026-2758 firefox: thunderbird: Use-after-free in the JavaScript: GC component
Summary: CVE-2026-2758 firefox: thunderbird: Use-after-free in the JavaScript: GC comp...
Keywords:
Status: NEW
Alias: CVE-2026-2758
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: 2026-02-24 14:05 UTC by OSIDB Bzimport
Modified: 2026-02-25 11:42 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-2026:3338 0 None None None 2026-02-25 11:33:03 UTC
Red Hat Product Errata RHSA-2026:3339 0 None None None 2026-02-25 11:42:46 UTC

Description OSIDB Bzimport 2026-02-24 14:05:54 UTC 
Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8.
Comment 1 errata-xmlrpc 2026-02-25 11:33:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:3338 https://access.redhat.com/errata/RHSA-2026:3338
Comment 2 errata-xmlrpc 2026-02-25 11:42:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:3339 https://access.redhat.com/errata/RHSA-2026:3339
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