ALAS2023-2026-1429

References: CVE-2025-14327  CVE-2026-0877  CVE-2026-0878  CVE-2026-0879  CVE-2026-0880  CVE-2026-0882  CVE-2026-0883  CVE-2026-0884  CVE-2026-0885  CVE-2026-0886  CVE-2026-0887  CVE-2026-0890  CVE-2026-0891 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146. (CVE-2025-14327)

Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0877)

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0878)

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0879)

Sandbox escape due to integer overflow in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0880)

Use-after-free in the IPC component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0882)

Information disclosure in the Networking component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0883)

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0884)

Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0885)

Incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0886)

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0887)

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0890)

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 147 and Firefox ESR < 140.7. (CVE-2026-0891)

Issue Correction:
Run dnf update firefox --releasever 2023.10.20260216 or dnf update --advisory ALAS2023-2026-1429 --releasever 2023.10.20260216 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    firefox-debuginfo-140.7.0-1.amzn2023.0.1.aarch64
    firefox-140.7.0-1.amzn2023.0.1.aarch64
    firefox-debugsource-140.7.0-1.amzn2023.0.1.aarch64

src:
    firefox-140.7.0-1.amzn2023.0.1.src

x86_64:
    firefox-debuginfo-140.7.0-1.amzn2023.0.1.x86_64
    firefox-140.7.0-1.amzn2023.0.1.x86_64
    firefox-debugsource-140.7.0-1.amzn2023.0.1.x86_64