Bug 2526773 (CVE-2026-84124)

Summary:	CVE-2026-84124 firefox: Use-after-free in the DOM: Core & HTML component
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	gotiwari, jhorak, mvyas, rhel-process-autobot, 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: Use-after-free in the DOM: Core & HTML 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 2026-09-01 12:49:25 UTC

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, and Firefox ESR 153.2.

Comment 1 Jon Orris 2026-09-14 13:40:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67133 https://access.redhat.com/errata/RHSA-2026:67133

Comment 2 Jon Orris 2026-09-14 13:40:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67129 https://access.redhat.com/errata/RHSA-2026:67129

Comment 3 Jon Orris 2026-09-17 07:49:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:68549 https://access.redhat.com/errata/RHSA-2026:68549

Comment 4 Jon Orris 2026-09-24 01:58:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:70642 https://access.redhat.com/errata/RHSA-2026:70642