Bug 2450732 (CVE-2026-4690)

Summary:	CVE-2026-4690 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	gotiwari, jgrulich, jhorak, mvyas, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM 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 2026-03-24 13:02:56 UTC

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.

Comment 1 errata-xmlrpc 2026-03-26 11:21:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:5931 https://access.redhat.com/errata/RHSA-2026:5931

Comment 2 errata-xmlrpc 2026-03-26 11:32:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:5930 https://access.redhat.com/errata/RHSA-2026:5930

Comment 3 errata-xmlrpc 2026-03-26 11:32:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:5932 https://access.redhat.com/errata/RHSA-2026:5932

Comment 4 errata-xmlrpc 2026-03-30 15:59:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6188 https://access.redhat.com/errata/RHSA-2026:6188

Comment 5 errata-xmlrpc 2026-04-01 09:36:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:6342 https://access.redhat.com/errata/RHSA-2026:6342

Comment 6 errata-xmlrpc 2026-04-07 21:30:31 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6917 https://access.redhat.com/errata/RHSA-2026:6917