{"id":80783,"date":"2026-06-19T13:25:54","date_gmt":"2026-06-19T09:55:54","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-11941-use-after-free-in-connection-id-iterator-and-ffi-functions\/"},"modified":"2026-06-19T13:25:54","modified_gmt":"2026-06-19T09:55:54","slug":"cve-2026-11941-use-after-free-in-connection-id-iterator-and-ffi-functions","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-11941-use-after-free-in-connection-id-iterator-and-ffi-functions\/","title":{"rendered":"CVE-2026-11941 &#8211; Use-after-free in connection ID iterator and FFI functions"},"content":{"rendered":"<p>CVE ID :CVE-2026-11941<\/p>\n<p>  Published : June 19, 2026, 9:55 a.m. | 1\u00a0hour, 47\u00a0minutes ago<\/p>\n<p>  Description :Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions.<\/p>\n<p>The \u201cquiche_connection_id_iter_next\u201d and \u201cquiche_conn_retired_scid_next\u201d functions would return a pointer to a \u201cConnectionId\u201d to the applications via function arguments, but the owned \u201cConnectionId\u201d would be dropped at the end of those functions&#8217; scope.<\/p>\n<p>Only applications using those FFI functions are affected. The FFI API is disabled by default by a build-time feature flag.<\/p>\n<p>Impact<br \/>\nIf unpatched, an application calling the affected FFI functions will dereference freed memory. The most likely outcome is undefined behavior leading to a process crash (denial of service). Depending on allocator state, the read may also return adjacent heap contents, resulting in limited information disclosure or incorrect connection identifier handling.<\/p>\n<p>Mitigation<br \/>\nUsers are requested to upgrade to quiche 0.29.2 which is the earliest version containing the fix for this issue.<\/p>\n<p>  Severity: 5.6 | MEDIUM<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-11941 Published : June 19, 2026, 9:55 a.m. | 1\u00a0hour, 47\u00a0minutes ago Description :Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions. The \u201cquiche_connection_id_iter_next\u201d and \u201cquiche_conn_retired_scid_next\u201d functions would return a pointer to a \u201cConnectionId\u201d to the applications via function arguments, but the owned \u201cConnectionId\u201d would be dropped &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-80783","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=80783"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80783\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=80783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=80783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=80783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}