ALAS2023-2026-1470

Amazon Linux 2023 Security Advisory: ALAS2023-2026-1470
Advisory Released Date: 2026-03-25
Advisory Updated Date: 2026-03-25
Severity: Important
Issue Overview:

Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2757)

Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2758)

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2759)

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2760)

Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2761)

Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2762)

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2763)

JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2764)

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2765)

Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2766)

Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2767)

Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2768)

Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2769)

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2770)

Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2771)

Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2772)

Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2773)

Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2774)

Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2775)

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2776)

Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2777)

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2778)

Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2779)

Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2780)

Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2781)

Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2782)

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2783)

Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2784)

Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2785)

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2786)

Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2787)

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2788)

Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2789)

Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2790)

Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (CVE-2026-2791)

Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148 and Firefox ESR < 140.8. (CVE-2026-2792)

Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2793)


Affected Packages:

firefox


Issue Correction:
Run dnf update firefox --releasever 2023.10.20260316 or dnf update --advisory ALAS2023-2026-1470 --releasever 2023.10.20260316 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-140.8.0-1.amzn2023.0.1.aarch64
    firefox-140.8.0-1.amzn2023.0.1.aarch64
    firefox-debugsource-140.8.0-1.amzn2023.0.1.aarch64

src:
    firefox-140.8.0-1.amzn2023.0.1.src

x86_64:
    firefox-debuginfo-140.8.0-1.amzn2023.0.1.x86_64
    firefox-140.8.0-1.amzn2023.0.1.x86_64
    firefox-debugsource-140.8.0-1.amzn2023.0.1.x86_64

Additional References

Release Notes:  Amazon Linux 2023 Release Notes

Red Hat: CVE-2026-2757, CVE-2026-2758, CVE-2026-2759, CVE-2026-2760, CVE-2026-2761, CVE-2026-2762, CVE-2026-2763, CVE-2026-2764, CVE-2026-2765, CVE-2026-2766, CVE-2026-2767, CVE-2026-2768, CVE-2026-2769, CVE-2026-2770, CVE-2026-2771, CVE-2026-2772, CVE-2026-2773, CVE-2026-2774, CVE-2026-2775, CVE-2026-2776, CVE-2026-2777, CVE-2026-2778, CVE-2026-2779, CVE-2026-2780, CVE-2026-2781, CVE-2026-2782, CVE-2026-2783, CVE-2026-2784, CVE-2026-2785, CVE-2026-2786, CVE-2026-2787, CVE-2026-2788, CVE-2026-2789, CVE-2026-2790, CVE-2026-2791, CVE-2026-2792, CVE-2026-2793

Mitre: CVE-2026-2757, CVE-2026-2758, CVE-2026-2759, CVE-2026-2760, CVE-2026-2761, CVE-2026-2762, CVE-2026-2763, CVE-2026-2764, CVE-2026-2765, CVE-2026-2766, CVE-2026-2767, CVE-2026-2768, CVE-2026-2769, CVE-2026-2770, CVE-2026-2771, CVE-2026-2772, CVE-2026-2773, CVE-2026-2774, CVE-2026-2775, CVE-2026-2776, CVE-2026-2777, CVE-2026-2778, CVE-2026-2779, CVE-2026-2780, CVE-2026-2781, CVE-2026-2782, CVE-2026-2783, CVE-2026-2784, CVE-2026-2785, CVE-2026-2786, CVE-2026-2787, CVE-2026-2788, CVE-2026-2789, CVE-2026-2790, CVE-2026-2791, CVE-2026-2792, CVE-2026-2793