Bug 2460096 (CVE-2026-6749) - CVE-2026-6749 firefox: thunderbird: Information disclosure due to uninitialized memory in the Graphics: Canvas2D component
Summary: CVE-2026-6749 firefox: thunderbird: Information disclosure due to uninitializ...
Keywords:
Status: NEW
Alias: CVE-2026-6749
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 14:02 UTC by OSIDB Bzimport
Modified: 2026-05-19 18:01 UTC (History)
7 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-2026:10757 0 None None None 2026-04-27 10:44:33 UTC
Red Hat Product Errata RHSA-2026:10766 0 None None None 2026-04-27 12:29:02 UTC
Red Hat Product Errata RHSA-2026:10767 0 None None None 2026-04-27 12:17:02 UTC
Red Hat Product Errata RHSA-2026:12285 0 None None None 2026-04-30 13:50:59 UTC
Red Hat Product Errata RHSA-2026:13537 0 None None None 2026-05-04 16:48:24 UTC
Red Hat Product Errata RHSA-2026:15892 0 None None None 2026-05-11 02:04:59 UTC
Red Hat Product Errata RHSA-2026:17477 0 None None None 2026-05-14 08:24:35 UTC
Red Hat Product Errata RHSA-2026:17687 0 None None None 2026-05-14 19:48:10 UTC
Red Hat Product Errata RHSA-2026:17688 0 None None None 2026-05-14 20:14:26 UTC
Red Hat Product Errata RHSA-2026:17689 0 None None None 2026-05-14 19:53:28 UTC
Red Hat Product Errata RHSA-2026:17690 0 None None None 2026-05-14 19:43:31 UTC
Red Hat Product Errata RHSA-2026:19041 0 None None None 2026-05-19 13:06:11 UTC
Red Hat Product Errata RHSA-2026:19131 0 None None None 2026-05-19 16:06:04 UTC
Red Hat Product Errata RHSA-2026:19201 0 None None None 2026-05-19 18:01:20 UTC

Description OSIDB Bzimport 2026-04-21 14:02:40 UTC 
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.
Comment 1 errata-xmlrpc 2026-04-27 10:44:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:10757 https://access.redhat.com/errata/RHSA-2026:10757
Comment 2 errata-xmlrpc 2026-04-27 12:17:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:10767 https://access.redhat.com/errata/RHSA-2026:10767
Comment 3 errata-xmlrpc 2026-04-27 12:29:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10766 https://access.redhat.com/errata/RHSA-2026:10766
Comment 4 errata-xmlrpc 2026-04-30 13:50:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:12285 https://access.redhat.com/errata/RHSA-2026:12285
Comment 5 errata-xmlrpc 2026-05-04 16:48:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:13537 https://access.redhat.com/errata/RHSA-2026:13537
Comment 6 errata-xmlrpc 2026-05-11 02:04:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:15892 https://access.redhat.com/errata/RHSA-2026:15892
Comment 7 errata-xmlrpc 2026-05-14 08:24:33 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-2026:17477 https://access.redhat.com/errata/RHSA-2026:17477
Comment 8 errata-xmlrpc 2026-05-14 19:43:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:17690 https://access.redhat.com/errata/RHSA-2026:17690
Comment 9 errata-xmlrpc 2026-05-14 19:48:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:17687 https://access.redhat.com/errata/RHSA-2026:17687
Comment 10 errata-xmlrpc 2026-05-14 19:53:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:17689 https://access.redhat.com/errata/RHSA-2026:17689
Comment 11 errata-xmlrpc 2026-05-14 20:14:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:17688 https://access.redhat.com/errata/RHSA-2026:17688
Comment 12 errata-xmlrpc 2026-05-19 13:06:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19041 https://access.redhat.com/errata/RHSA-2026:19041
Comment 13 errata-xmlrpc 2026-05-19 16:06:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19131 https://access.redhat.com/errata/RHSA-2026:19131
Comment 14 errata-xmlrpc 2026-05-19 18:01:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19201 https://access.redhat.com/errata/RHSA-2026:19201
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