Bug 2479839 (CVE-2026-8956)

Summary: CVE-2026-8956 firefox: Integer overflow in the Networking: JAR component
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gotiwari, jgrulich, jhorak, mvyas, rhel-process-autobot, tpopela, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Integer overflow in the Networking: JAR component
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-19 14:01:40 UTC
Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.

Comment 1 errata-xmlrpc 2026-05-27 16:01:42 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:21382 https://access.redhat.com/errata/RHSA-2026:21382

Comment 2 errata-xmlrpc 2026-05-27 16:05:27 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:21380 https://access.redhat.com/errata/RHSA-2026:21380

Comment 3 errata-xmlrpc 2026-05-27 16:07:35 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21381 https://access.redhat.com/errata/RHSA-2026:21381

Comment 4 errata-xmlrpc 2026-05-27 16:41:21 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21378 https://access.redhat.com/errata/RHSA-2026:21378

Comment 5 errata-xmlrpc 2026-06-01 15:28:04 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:22325 https://access.redhat.com/errata/RHSA-2026:22325

Comment 6 errata-xmlrpc 2026-06-03 00:49:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:22643 https://access.redhat.com/errata/RHSA-2026:22643

Comment 8 errata-xmlrpc 2026-06-16 06:06:22 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:26174 https://access.redhat.com/errata/RHSA-2026:26174

Comment 9 errata-xmlrpc 2026-06-16 11:59:12 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:26269 https://access.redhat.com/errata/RHSA-2026:26269

Comment 10 errata-xmlrpc 2026-06-16 11:59:37 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-2026:26270 https://access.redhat.com/errata/RHSA-2026:26270

Comment 11 errata-xmlrpc 2026-06-16 12:17:08 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-2026:26268 https://access.redhat.com/errata/RHSA-2026:26268

Comment 12 errata-xmlrpc 2026-06-17 05:42:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:26491 https://access.redhat.com/errata/RHSA-2026:26491

Comment 13 errata-xmlrpc 2026-06-17 05:51:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:26493 https://access.redhat.com/errata/RHSA-2026:26493

Comment 14 errata-xmlrpc 2026-06-17 05:57:07 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:26492 https://access.redhat.com/errata/RHSA-2026:26492

Comment 15 errata-xmlrpc 2026-06-17 08:02:21 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:26521 https://access.redhat.com/errata/RHSA-2026:26521

Comment 16 errata-xmlrpc 2026-06-17 10:00:40 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 Extended Update Support Long-Life Add-On

Via RHSA-2026:26536 https://access.redhat.com/errata/RHSA-2026:26536

Comment 17 errata-xmlrpc 2026-06-17 10:24:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:26539 https://access.redhat.com/errata/RHSA-2026:26539

Comment 18 errata-xmlrpc 2026-06-17 10:56:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:26551 https://access.redhat.com/errata/RHSA-2026:26551

Comment 19 errata-xmlrpc 2026-06-17 14:34:43 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 Extended Update Support Long-Life Add-On

Via RHSA-2026:26606 https://access.redhat.com/errata/RHSA-2026:26606

Comment 20 errata-xmlrpc 2026-06-17 15:21:20 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-2026:26629 https://access.redhat.com/errata/RHSA-2026:26629

Comment 21 errata-xmlrpc 2026-06-17 15:39:47 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-2026:26630 https://access.redhat.com/errata/RHSA-2026:26630

Comment 22 errata-xmlrpc 2026-06-22 02:29:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:27715 https://access.redhat.com/errata/RHSA-2026:27715