Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Release firefox-140.17.0-1.el9_8 ALSA-2026:76761

Open Beginner friendly
  • Is something wrong?
#3,958 2 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
linux
Domain
release, security

Research direction

Start with the ALSA-2026:76761 advisory and the affected package versions listed in the issue, then locate the update definitions for firefox and firefox-x11 in the repository. Done means both packages resolve to version 140.17.0-1.el9_8 for the listed architectures and the repository's package validation succeeds.

Written by the indexing model from the issue text.

Description

firefox security update
Severity: Important
Description
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-92035)
  • firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100832)
  • firefox: Use-after-free in the Layout: Text and Fonts component (CVE-2026-100784)
  • firefox: thunderbird: Privilege escalation in the DLL Services component (CVE-2026-100801)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Internationalization component (CVE-2026-100794)
  • firefox: thunderbird: Privilege escalation in the Address Bar component (CVE-2026-100820)
  • firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100777)
  • firefox: thunderbird: Information disclosure in the Networking: JAR component (CVE-2026-100766)
  • firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100779)
  • firefox: thunderbird: Privilege escalation in the DOM: Service Workers component (CVE-2026-100807)
  • firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-100792)
  • firefox: Privilege escalation due to use-after-free in the Graphics: WebRender component (CVE-2026-100797)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the XPCOM component (CVE-2026-100819)
  • firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100776)
  • firefox: thunderbird: Use-after-free in the Widget component (CVE-2026-100757)
  • firefox: Sandbox escape due to use-after-free in the Graphics component (CVE-2026-100786)
  • firefox: thunderbird: Information disclosure in the Networking component (CVE-2026-96869)
  • firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100770)
  • firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100769)
  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100791)
  • firefox: thunderbird: Sandbox escape due to use-after-free in the Widget: Gtk component (CVE-2026-100818)
  • firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics component (CVE-2026-100782)
  • firefox: firefox: Sandbox escape via use-after-free in DOM component (CVE-2026-100811)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100772)
  • firefox: thunderbird: Uninitialized memory in the Storage: Quota Manager component (CVE-2026-100759)
  • firefox: Sandbox escape due to use-after-free in the DOM: Core & HTML component (CVE-2026-100778)
  • firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-100758)
  • firefox: thunderbird: Sandbox escape in the Graphics component (CVE-2026-100775)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-100781)
  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100774)
  • firefox: thunderbird: Same-origin policy bypass in the WebExtensions component (CVE-2026-100803)
  • firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100789)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100785)
  • firefox: thunderbird: Site isolation issue in the Panning and Zooming component (CVE-2026-100821)
  • firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-100788)
  • firefox: thunderbird: Undefined behavior in the DOM: Streams component (CVE-2026-100771)
  • firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100762)
  • firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100790)
  • firefox: thunderbird: Use-after-free in the Storage: IndexedDB component (CVE-2026-100773)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100780)
  • firefox: thunderbird: Use-after-free in the Networking: Cache component (CVE-2026-100767)
  • firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: Playback component (CVE-2026-100756)
  • firefox: thunderbird: Uninitialized memory in the Audio/Video component (CVE-2026-100783)

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.

Affected packages:
firefox-140.17.0-1.el9_8.x86_64
firefox-x11-140.17.0-1.el9_8.x86_64
firefox-140.17.0-1.el9_8.s390x
firefox-x11-140.17.0-1.el9_8.s390x
firefox-140.17.0-1.el9_8.ppc64le
firefox-x11-140.17.0-1.el9_8.ppc64le
firefox-140.17.0-1.el9_8.aarch64
firefox-x11-140.17.0-1.el9_8.aarch64

Dominant language
No language data
Stars
2
Forks
0
No merged PRs in 30d

Getting set up

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from AlmaLinux/updates

All issues in AlmaLinux/updates

Similar issues

More Release issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.