Bug 2442287 (CVE-2026-2793) - CVE-2026-2793 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148
Summary: CVE-2026-2793 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 1...
Keywords:
Status: NEW
Alias: CVE-2026-2793
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 14:02 UTC by OSIDB Bzimport
Modified: 2026-03-12 08:17 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 11:32:09 UTC
Red Hat Product Errata RHSA-2026:3339 0 None None None 2026-02-25 11:42:58 UTC
Red Hat Product Errata RHSA-2026:3361 0 None None None 2026-02-25 15:20:59 UTC
Red Hat Product Errata RHSA-2026:3491 0 None None None 2026-03-02 05:41:30 UTC
Red Hat Product Errata RHSA-2026:3492 0 None None None 2026-03-02 05:43:02 UTC
Red Hat Product Errata RHSA-2026:3493 0 None None None 2026-03-02 05:48:44 UTC
Red Hat Product Errata RHSA-2026:3494 0 None None None 2026-03-02 05:53:51 UTC
Red Hat Product Errata RHSA-2026:3495 0 None None None 2026-03-02 05:53:30 UTC
Red Hat Product Errata RHSA-2026:3496 0 None None None 2026-03-02 06:02:27 UTC
Red Hat Product Errata RHSA-2026:3497 0 None None None 2026-03-02 06:09:29 UTC
Red Hat Product Errata RHSA-2026:3515 0 None None None 2026-03-02 11:30:19 UTC
Red Hat Product Errata RHSA-2026:3516 0 None None None 2026-03-02 11:40:19 UTC
Red Hat Product Errata RHSA-2026:3517 0 None None None 2026-03-02 11:35:45 UTC
Red Hat Product Errata RHSA-2026:3976 0 None None None 2026-03-09 01:56:53 UTC
Red Hat Product Errata RHSA-2026:3978 0 None None None 2026-03-09 01:48:56 UTC
Red Hat Product Errata RHSA-2026:3979 0 None None None 2026-03-09 01:50:52 UTC
Red Hat Product Errata RHSA-2026:3980 0 None None None 2026-03-09 01:56:38 UTC
Red Hat Product Errata RHSA-2026:3981 0 None None None 2026-03-09 01:54:56 UTC
Red Hat Product Errata RHSA-2026:3982 0 None None None 2026-03-09 01:59:39 UTC
Red Hat Product Errata RHSA-2026:3983 0 None None None 2026-03-09 01:47:50 UTC
Red Hat Product Errata RHSA-2026:3984 0 None None None 2026-03-09 01:53:56 UTC
Red Hat Product Errata RHSA-2026:4022 0 None None None 2026-03-09 11:20:20 UTC
Red Hat Product Errata RHSA-2026:4152 0 None None None 2026-03-10 06:07:35 UTC
Red Hat Product Errata RHSA-2026:4260 0 None None None 2026-03-11 05:52:01 UTC
Red Hat Product Errata RHSA-2026:4432 0 None None None 2026-03-12 08:17:07 UTC

Description OSIDB Bzimport 2026-02-24 14:02:31 UTC 
Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8.
Comment 1 errata-xmlrpc 2026-02-25 11:32:08 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 11:42:57 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
Comment 3 errata-xmlrpc 2026-02-25 15:20:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:3361 https://access.redhat.com/errata/RHSA-2026:3361
Comment 4 errata-xmlrpc 2026-03-02 05:41:29 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-2026:3491 https://access.redhat.com/errata/RHSA-2026:3491
Comment 5 errata-xmlrpc 2026-03-02 05:43:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:3492 https://access.redhat.com/errata/RHSA-2026:3492
Comment 6 errata-xmlrpc 2026-03-02 05:48:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:3493 https://access.redhat.com/errata/RHSA-2026:3493
Comment 7 errata-xmlrpc 2026-03-02 05:53:29 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 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:3495 https://access.redhat.com/errata/RHSA-2026:3495
Comment 8 errata-xmlrpc 2026-03-02 05:53:50 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-2026:3494 https://access.redhat.com/errata/RHSA-2026:3494
Comment 9 errata-xmlrpc 2026-03-02 06:02:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:3496 https://access.redhat.com/errata/RHSA-2026:3496
Comment 10 errata-xmlrpc 2026-03-02 06:09:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:3497 https://access.redhat.com/errata/RHSA-2026:3497
Comment 11 errata-xmlrpc 2026-03-02 11:30:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:3515 https://access.redhat.com/errata/RHSA-2026:3515
Comment 12 errata-xmlrpc 2026-03-02 11:35:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:3517 https://access.redhat.com/errata/RHSA-2026:3517
Comment 13 errata-xmlrpc 2026-03-02 11:40:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:3516 https://access.redhat.com/errata/RHSA-2026:3516
Comment 14 errata-xmlrpc 2026-03-09 01:47:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:3983 https://access.redhat.com/errata/RHSA-2026:3983
Comment 15 errata-xmlrpc 2026-03-09 01:48:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:3978 https://access.redhat.com/errata/RHSA-2026:3978
Comment 16 errata-xmlrpc 2026-03-09 01:50:50 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 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:3979 https://access.redhat.com/errata/RHSA-2026:3979
Comment 17 errata-xmlrpc 2026-03-09 01:53:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:3984 https://access.redhat.com/errata/RHSA-2026:3984
Comment 18 errata-xmlrpc 2026-03-09 01:54:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:3981 https://access.redhat.com/errata/RHSA-2026:3981
Comment 19 errata-xmlrpc 2026-03-09 01:56:36 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-2026:3980 https://access.redhat.com/errata/RHSA-2026:3980
Comment 20 errata-xmlrpc 2026-03-09 01:56:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:3976 https://access.redhat.com/errata/RHSA-2026:3976
Comment 21 errata-xmlrpc 2026-03-09 01:59:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:3982 https://access.redhat.com/errata/RHSA-2026:3982
Comment 22 errata-xmlrpc 2026-03-09 11:20:18 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-2026:4022 https://access.redhat.com/errata/RHSA-2026:4022
Comment 23 errata-xmlrpc 2026-03-10 06:07:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:4152 https://access.redhat.com/errata/RHSA-2026:4152
Comment 24 errata-xmlrpc 2026-03-11 05:52:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:4260 https://access.redhat.com/errata/RHSA-2026:4260
Comment 25 errata-xmlrpc 2026-03-12 08:17:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:4432 https://access.redhat.com/errata/RHSA-2026:4432
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