Bug 2526765 (CVE-2026-84120) - CVE-2026-84120 firefox: Use-after-free in the Audio/Video component
Summary: CVE-2026-84120 firefox: Use-after-free in the Audio/Video component
Keywords:
Status: NEW
Alias: CVE-2026-84120
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: 2026-09-01 12:48 UTC by OSIDB Bzimport
Modified: 2026-09-17 07:49 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-2026:67129 0 None None None 2026-09-14 13:40:56 UTC
Red Hat Product Errata RHSA-2026:67133 0 None None None 2026-09-14 13:40:46 UTC
Red Hat Product Errata RHSA-2026:68549 0 None None None 2026-09-17 07:49:22 UTC

Description OSIDB Bzimport 2026-09-01 12:48:22 UTC 
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.
Comment 1 Jon Orris 2026-09-14 13:40:45 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 13:40:55 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 07:49:21 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
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