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ALSA-2025:16108 Not scored

Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics: Canvas2D component (CVE-2025-10527) * firefox: thunderbird: Incorrect boundary conditions in the JavaScript: GC component (CVE-2025-10532) * firefox: thunderbird: Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component (CVE-2025-10528) * firefox: thunderbird: Same-origin policy bypass in the Layout component (CVE-2025-10529) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143 (CVE-2025-10537) * firefox: thunderbird: Information disclosure in the Networking: Cache component (CVE-2025-10536) * firefox: thunderbird: Integer overflow in the SVG component (CVE-2025-10533) 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.

Exploit probability Not scored
Published September 17, 2025
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:9 firefox
AlmaLinux:9 firefox-x11

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2025:16108

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics: Canvas2D component (CVE-2025-10527) * firefox: thunderbird: Incorrect boundary conditions in the JavaScript: GC component (CVE-2025-10532) * firefox: thunderbird: Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component (CVE-2025-10528) * firefox: thunderbird: Same-origin policy bypass in the Layout component (CVE-2025-10529) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143 (CVE-2025-10537) * firefox: thunderbird: Information disclosure in the Networking: Cache component (CVE-2025-10536) * firefox: thunderbird: Integer overflow in the SVG component (CVE-2025-10533) 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.

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05 / REFERENCES

Further evidence