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ALSA-2025:23034 — Important: firefox security update

2026-10-02T20:48:10.768422+00:00

Affected: AlmaLinux:9: firefox, AlmaLinux:9: firefox-x11

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

Security Fix(es):

* firefox: Memory safety bugs fixed in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146 (CVE-2025-14333) * firefox: Use-after-free in the WebRTC: Signaling component (CVE-2025-14321) * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14325) * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2025-14322) * firefox: Privilege escalation in the Netmonitor component (CVE-2025-14328) * firefox: Privilege escalation in the Netmonitor component (CVE-2025-14329) * firefox: Same-origin policy bypass in the Request Handling component (CVE-2025-14331) * firefox: Privilege escalation in the DOM: Notifications component (CVE-2025-14323) * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14330) * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14324)

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.

bdu:2025-16360

2026-10-02T20:48:10.768508+00:00

bdu:2025-16360

certfr-2025-avi-1087 — De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un atta…

2026-10-02T20:48:10.768527+00:00

certfr-2025-avi-1087

EUVD-2026-290664

2026-10-02T20:48:10.768543+00:00

EUVD-2026-290664

fkie_cve-2025-14331

2026-10-02T20:48:10.768554+00:00

Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

GHSA-pq76-9m6x-m6mx

2026-10-02T20:48:10.768576+00:00

Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.

OESA-2026-1085 — firefox security update

2026-10-02T20:48:10.768590+00:00

Affected: openEuler:24.03-LTS-SP1: firefox

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global moz_debug_prefix /lib/debug %global moz_debug_dir /lib/debug/ %global uname_m %(uname -m) %global symbols_file_name -.en-US.-%(uname.crashreporter-symbols.zip %global symbols_file_path /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global _find_debuginfo_opts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporter_pkg_name mozilla-crashreporter--debuginfo Security Fix(es):

Use-after-free vulnerability in the WebRTC Signaling component of Firefox browser. This vulnerability affects Firefox versions prior to 146 and Firefox ESR versions prior to 140.6.(CVE-2025-14321)

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.(CVE-2025-14322)

Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.(CVE-2025-14323)

A JIT (Just-In-Time) miscompilation vulnerability exists in the JavaScript Engine component of Mozilla Firefox. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6. An attacker could potentially exploit this vulnerability to cause memory corruption or execute arbitrary code.(CVE-2025-14324)

JIT miscompilation…

openSUSE-SU-2025:15809-1 — firefox-esr-140.6.0-1.1 on GA media

2026-10-02T20:48:10.768641+00:00

firefox-esr-140.6.0-1.1 on GA media

RHSA-2026:0004 — Red Hat Security Advisory: thunderbird security update

2026-10-02T20:48:10.768663+00:00

firefox: thunderbird: Use-after-free in the WebRTC: Signaling component firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component firefox: thunderbird: Privilege escalation in the DOM: Notifications component firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component firefox: thunderbird: Privilege escalation in the Netmonitor component firefox: thunderbird: Privilege escalation in the Netmonitor component firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component firefox: thunderbird: Same-origin policy bypass in the Request Handling component firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146

SUSE-SU-2025:4396-1 — Security update for MozillaFirefox

2026-10-02T20:48:10.768694+00:00

Security update for MozillaFirefox

UBUNTU-CVE-2025-14331

2026-10-02T20:48:10.768713+00:00

Affected: Ubuntu:18.04:LTS: mozjs52, Ubuntu:18.04:LTS: mozjs38, Ubuntu:20.04:LTS: mozjs68, Ubuntu:20.04:LTS: mozjs52, Ubuntu:22.04:LTS: mozjs102, Ubuntu:22.04:LTS: mozjs78, Ubuntu:22.04:LTS: mozjs91, Ubuntu:22.04:LTS: thunderbird, Ubuntu:24.04:LTS: mozjs102, Ubuntu:24.04:LTS: mozjs115

Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

WID-SEC-W-2025-2812 — Mozilla Firefox: Mehrere Schwachstellen

2026-10-02T20:48:10.768745+00:00

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox und Mozilla Firefox ESR ausnutzen, um aus der Sandbox auszubrechen, Rechte im Browser zu erhöhen, Netzwerkanfragen zu manipulieren einen DoS zu verursachen, Informationen offenzulegen und Code auszuführen