Bug 2428973 (CVE-2026-0879) - CVE-2026-0879 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component
Summary: CVE-2026-0879 firefox: thunderbird: Sandbox escape due to incorrect boundary ...
Keywords:
Status: NEW
Alias: CVE-2026-0879
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: 2026-01-13 14:02 UTC by OSIDB Bzimport
Modified: 2026-01-16 13:36 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-2026:0667 0 None None None 2026-01-15 08:19:27 UTC
Red Hat Product Errata RHSA-2026:0694 0 None None None 2026-01-15 11:47:36 UTC

Description OSIDB Bzimport 2026-01-13 14:02:43 UTC 
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7.
Comment 1 errata-xmlrpc 2026-01-15 08:19:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:0667 https://access.redhat.com/errata/RHSA-2026:0667
Comment 2 errata-xmlrpc 2026-01-15 11:47:35 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:0694 https://access.redhat.com/errata/RHSA-2026:0694
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