RLSA-2026:89758

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Source
https://errata.rockylinux.org/RLSA-2026:89758
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:89758.json
JSON Data
https://api.test.osv.dev/v1/vulns/RLSA-2026:89758
Upstream
CVE (29)
  • CVE-2026-109704
  • CVE-2026-109705
  • CVE-2026-109706
  • CVE-2026-109707
  • CVE-2026-109708
  • CVE-2026-109709
  • CVE-2026-109711
  • CVE-2026-109712
  • CVE-2026-109713
  • CVE-2026-109715
  • CVE-2026-109716
  • CVE-2026-109717
  • CVE-2026-109718
  • CVE-2026-109719
  • CVE-2026-109720
  • CVE-2026-109721
  • CVE-2026-109722
  • CVE-2026-109723
  • CVE-2026-109724
  • CVE-2026-109725
  • CVE-2026-109726
  • CVE-2026-109727
  • CVE-2026-109728
  • CVE-2026-109729
  • CVE-2026-109730
  • CVE-2026-109732
  • CVE-2026-109740
  • CVE-2026-45186
  • CVE-2026-77214
Published
2026-10-31T12:09:44Z
Modified
2026-10-31T12:30:02Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L CVSS Calculator
Summary
Important: firefox security, bug fix, and enhancement update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

  • libexpat: denial of service via crafted XML input (CVE-2026-45186)

  • expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214)

  • firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)

  • firefox: Use-after-free in the XML component (CVE-2026-109718)

  • firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)

  • firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)

  • firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)

  • firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)

  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)

  • firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component (CVE-2026-109709)

  • firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component (CVE-2026-109705)

  • firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)

  • firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)

  • firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)

  • firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)

  • firefox: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-109708)

  • firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)

  • firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)

  • firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)

  • firefox: Use-after-free in the SVG component (CVE-2026-109726)

  • firefox: Integer overflow in the Graphics component (CVE-2026-109730)

  • firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)

  • firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)

  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)

  • firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)

  • firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)

  • firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)

  • firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)

  • firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)

Bug Fix(es) and Enhancement(s):

  • Firefox ESR 153 rebase [rhel-10.2.z] (JIRA:Rocky Linux-175166)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Database specific 
{
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:89758"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:10 / firefox

Package

Name
firefox
Purl
pkg:rpm/rocky-linux/firefox?distro=rocky-linux-10&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:153.5.0-1.el10_2
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:89758.json"