{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/vex/2026/cve-2026-27135-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-01T22:30:25Z", "generator": { "date": "2026-08-01T22:30:25Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-27135-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-03-18T18:16:00Z", "revision_history": [ { "date": "2026-03-18T18:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-01T22:30:25Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on 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Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "under_investigation": [ "Debian-10:libnghttp2-14-0:1.36.0-2+deb10u3+tuxcare.els1.amd64", "Debian-10:libnghttp2-dev-0:1.36.0-2+deb10u3+tuxcare.els1.amd64", "Debian-10:libnghttp2-doc-0:1.36.0-2+deb10u3+tuxcare.els1.all", "Debian-10:nghttp2-0:1.36.0-2+deb10u3+tuxcare.els1.all", "Debian-10:nghttp2-client-0:1.36.0-2+deb10u3+tuxcare.els1.amd64", "Debian-10:nghttp2-proxy-0:1.36.0-2+deb10u3+tuxcare.els1.amd64", "Debian-10:nghttp2-server-0:1.36.0-2+deb10u3+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-27135" }, { "category": "external", 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