{"id":66605,"date":"2026-06-28T03:34:16","date_gmt":"2026-06-28T03:34:16","guid":{"rendered":"https:\/\/zero.redgem.net\/?p=66605"},"modified":"2026-06-28T03:34:16","modified_gmt":"2026-06-28T03:34:16","slug":"bluetooth-fix-locking-in-hciconnrequestevt-with-hciprotodefer","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=66605","title":{"rendered":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER\\n\\nWhen protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls\\nhci_connect_cfm(conn) without hdev-\\u003elock. Generally hci_connect_cfm()\\nassumes it is held, and if conn is deleted concurrently -\\u003e UAF.\\n\\nOnly SCO and ISO set HCI_PROTO_DEFER and only for defer setup listen,\\nand HCI_EV_CONN_REQUEST is not generated for ISO.  In the non-deferred\\nlistening socket code paths, hci_connect_cfm(conn) is called with\\nhdev-\\u003elock held.\\n\\nFix by holding the lock.&#8221;,&#8221;published&#8221;:&#8221;2026-06-24T16:30:13.570Z&#8221;,&#8221;modified&#8221;:&#8221;2026-06-28T06:38:58.197Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER&#8221;,&#8221;source&#8221;:&#8221;Linux&#8221;,&#8221;references&#8221;:&#8221;https:\/\/git.kernel.org\/stable\/c\/60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4\\nhttps:\/\/git.kernel.org\/stable\/c\/9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e\\nhttps:\/\/git.kernel.org\/stable\/c\/c7777f534a8018ae4bb1c80d8925af4df588a314\\nhttps:\/\/git.kernel.org\/stable\/c\/6b4d226d01ab7da0d2027a2a1e3a6079152e5065\\nhttps:\/\/git.kernel.org\/stable\/c\/541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f\\nhttps:\/\/git.kernel.org\/stable\/c\/385b2d0468a0871fc716c549fa3b0c257c7dbcb3\\nhttps:\/\/git.kernel.org\/stable\/c\/c27224daf0b08efbb2b24ed64b6139b294f5473a\\nhttps:\/\/git.kernel.org\/stable\/c\/5c7209a341ff2ac338b2b0375c34a307b37c9ac2&#8243;,&#8221;id&#8221;:&#8221;CVE-2026-53072&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:null,&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;Linux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 70c464256310e1c3716099b9d02ece4169272f73\\nLinux Linux 3.17&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:8.8,&#8221;severity&#8221;:&#8221;HIGH&#8221;,&#8221;vector&#8221;:&#8221;CVSS:3.1\/AV:A\/AC:L\/PR:N\/UI:N\/S:U\/C:H\/I:H\/A:H&#8221;,&#8221;version&#8221;:&#8221;3.1&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;Linux&#8221;,&#8221;version&#8221;:&#8221;70c464256310e1c3716099b9d02ece4169272f73&#8243;,&#8221;vendor&#8221;:&#8221;Linux&#8221;,&#8221;ai_description&#8221;:&#8221;&#8221;,&#8221;ai_severity&#8221;:&#8221;&#8221;,&#8221;ai_vendor&#8221;:&#8221;&#8221;,&#8221;ai_product&#8221;:&#8221;&#8221;,&#8221;ai_version&#8221;:&#8221;&#8221;,&#8221;ai_score&#8221;:0}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER\\n\\nWhen protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls\\nhci_connect_cfm(conn) without hdev-\\u003elock. Generally hci_connect_cfm()\\nassumes&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,41,12,15,13,7,11,5],"class_list":["post-66605","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-88","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=66605\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;In the Linux kernel, the following vulnerability has been resolved:nnBluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFERnnWhen protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() callsnhci_connect_cfm(conn) without hdev-u003elock. Generally hci_connect_cfm()nassumes...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zero.redgem.net\/?p=66605\" \/>\n<meta property=\"og:site_name\" content=\"zero redgem\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-28T03:34:16+00:00\" \/>\n<meta name=\"author\" content=\"invoker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"invoker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605\"},\"author\":{\"name\":\"invoker\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/person\\\/fbfeae8dfad117ac08a7621bee1a1dca\"},\"headline\":\"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072\",\"datePublished\":\"2026-06-28T03:34:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605\"},\"wordCount\":454,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\"},\"keywords\":[\"CVE\",\"CVSS\",\"CVSS-8.8\",\"exploit\",\"HIGH\",\"news\",\"Security\",\"tapic\",\"Vulnerability\"],\"articleSection\":[\"category_cve\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=66605#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605\",\"name\":\"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#website\"},\"datePublished\":\"2026-06-28T03:34:16+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=66605\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=66605#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/zero.redgem.net\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#website\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/\",\"name\":\"zero redgem\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/zero.redgem.net\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\",\"name\":\"zero redgem\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"\",\"contentUrl\":\"\",\"width\":191,\"height\":188,\"caption\":\"zero redgem\"},\"image\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/person\\\/fbfeae8dfad117ac08a7621bee1a1dca\",\"name\":\"invoker\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"caption\":\"invoker\"},\"sameAs\":[\"https:\\\/\\\/zero.redgem.net\"],\"url\":\"https:\\\/\\\/zero.redgem.net\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/zero.redgem.net\/?p=66605","og_locale":"en_US","og_type":"article","og_title":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem","og_description":"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;In the Linux kernel, the following vulnerability has been resolved:nnBluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFERnnWhen protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() callsnhci_connect_cfm(conn) without hdev-u003elock. Generally hci_connect_cfm()nassumes...","og_url":"https:\/\/zero.redgem.net\/?p=66605","og_site_name":"zero redgem","article_published_time":"2026-06-28T03:34:16+00:00","author":"invoker","twitter_card":"summary_large_image","twitter_misc":{"Written by":"invoker","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/zero.redgem.net\/?p=66605#article","isPartOf":{"@id":"https:\/\/zero.redgem.net\/?p=66605"},"author":{"name":"invoker","@id":"https:\/\/zero.redgem.net\/#\/schema\/person\/fbfeae8dfad117ac08a7621bee1a1dca"},"headline":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072","datePublished":"2026-06-28T03:34:16+00:00","mainEntityOfPage":{"@id":"https:\/\/zero.redgem.net\/?p=66605"},"wordCount":454,"commentCount":0,"publisher":{"@id":"https:\/\/zero.redgem.net\/#organization"},"keywords":["CVE","CVSS","CVSS-8.8","exploit","HIGH","news","Security","tapic","Vulnerability"],"articleSection":["category_cve"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/zero.redgem.net\/?p=66605#respond"]}]},{"@type":"WebPage","@id":"https:\/\/zero.redgem.net\/?p=66605","url":"https:\/\/zero.redgem.net\/?p=66605","name":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072 - zero redgem","isPartOf":{"@id":"https:\/\/zero.redgem.net\/#website"},"datePublished":"2026-06-28T03:34:16+00:00","breadcrumb":{"@id":"https:\/\/zero.redgem.net\/?p=66605#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/zero.redgem.net\/?p=66605"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/zero.redgem.net\/?p=66605#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/zero.redgem.net\/"},{"@type":"ListItem","position":2,"name":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER_CVE-2026-53072"}]},{"@type":"WebSite","@id":"https:\/\/zero.redgem.net\/#website","url":"https:\/\/zero.redgem.net\/","name":"zero redgem","description":"","publisher":{"@id":"https:\/\/zero.redgem.net\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/zero.redgem.net\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/zero.redgem.net\/#organization","name":"zero redgem","url":"https:\/\/zero.redgem.net\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/zero.redgem.net\/#\/schema\/logo\/image\/","url":"","contentUrl":"","width":191,"height":188,"caption":"zero redgem"},"image":{"@id":"https:\/\/zero.redgem.net\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/zero.redgem.net\/#\/schema\/person\/fbfeae8dfad117ac08a7621bee1a1dca","name":"invoker","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","caption":"invoker"},"sameAs":["https:\/\/zero.redgem.net"],"url":"https:\/\/zero.redgem.net\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts\/66605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=66605"}],"version-history":[{"count":0,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts\/66605\/revisions"}],"wp:attachment":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=66605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=66605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=66605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}