Amazon Linux 2023 Security Advisory: ALAS2023-2026-1652
Advisory Released Date: 2026-05-14
Advisory Updated Date: 2026-05-14
FAQs regarding Amazon Linux ALAS/CVE Severity
Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips setting the length to zero. (CVE-2026-6654)
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6746)
Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6747)
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6748)
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6749)
Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6750)
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6751)
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6752)
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6753)
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6754)
Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6757)
Privilege escalation in the Networking component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6761)
Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6762)
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6763)
Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6764)
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6765)
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. (CVE-2026-6766)
Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6767)
Privilege escalation in the Debugger component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6769)
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6770)
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6771)
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6772)
Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10. (CVE-2026-6776)
Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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. (CVE-2026-6785)
Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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. (CVE-2026-6786)
Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. (CVE-2026-7320)
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox ESR 140.10.1. (CVE-2026-7321)
Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. (CVE-2026-7322)
Memory safety bugs present in Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 and Thunderbird 150.0.0. 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 was fixed in Firefox 150.0.1 and Firefox ESR 140.10.1. (CVE-2026-7323)
Affected Packages:
firefox
Issue Correction:
Run dnf update firefox --releasever 2023.11.20260511 or dnf update --advisory ALAS2023-2026-1652 --releasever 2023.11.20260511 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
aarch64:
firefox-debuginfo-140.10.1-1.amzn2023.0.1.aarch64
firefox-140.10.1-1.amzn2023.0.1.aarch64
firefox-debugsource-140.10.1-1.amzn2023.0.1.aarch64
src:
firefox-140.10.1-1.amzn2023.0.1.src
x86_64:
firefox-debuginfo-140.10.1-1.amzn2023.0.1.x86_64
firefox-140.10.1-1.amzn2023.0.1.x86_64
firefox-debugsource-140.10.1-1.amzn2023.0.1.x86_64