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.

amazon_alas ALAS2023-2026-1676: Amazon Linux 2023 Security Advisory:ALAS2023-2026-1676

amazon_alas ALAS2023-2026-1652: Amazon Linux 2023 Security Advisory:ALAS2023-2026-1652

The version of firefox installed on the remote host is prior to 140.10.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2FIREFOX-2026-058 advisory.

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of rust installed on the remote host is prior to 1.95.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3296 advisory.

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of thunderbird installed on the remote host is prior to 140.10.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3290 advisory.

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
314585	Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2026-058 (ALASFIREFOX-2026-058)	Nessus	Amazon Linux Local Security Checks	medium
314574	Amazon Linux 2 : rust, --advisory ALAS2-2026-3296 (ALAS-2026-3296)	Nessus	Amazon Linux Local Security Checks	medium
314564	Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3290 (ALAS-2026-3290)	Nessus	Amazon Linux Local Security Checks	medium
307650	Linux Distros Unpatched Vulnerability : CVE-2026-6654	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-6654

medium

Tenable Plugins

Coming Soon

medium

medium

medium

medium