{"id":81061,"date":"2026-06-25T12:09:59","date_gmt":"2026-06-25T08:39:59","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-53276-bluetooth-iso-fix-a-use-after-free-of-the-hci_conn-pointer\/"},"modified":"2026-06-25T12:09:59","modified_gmt":"2026-06-25T08:39:59","slug":"cve-2026-53276-bluetooth-iso-fix-a-use-after-free-of-the-hci_conn-pointer","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-53276-bluetooth-iso-fix-a-use-after-free-of-the-hci_conn-pointer\/","title":{"rendered":"CVE-2026-53276 &#8211; Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer"},"content":{"rendered":"<p>CVE ID :CVE-2026-53276<\/p>\n<p>  Published : June 25, 2026, 8:39 a.m. | 1\u00a0hour, 4\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer<\/p>\n<p>In iso_sock_rebind_bc(), the bis pointer is cached, then the socket lock is<br \/>\ndropped:<br \/>\n\tbis = iso_pi(sk)-&gt;conn-&gt;hcon;<br \/>\n\t\/* Release the socket before lookups since that requires hci_dev_lock<br \/>\n\t * which shall not be acquired while holding sock_lock for proper<br \/>\n\t * ordering.<br \/>\n\t *\/<br \/>\n\trelease_sock(sk);<br \/>\n\thci_dev_lock(bis-&gt;hdev);<\/p>\n<p>During the unlocked window, could a concurrent close() destroy the connection<br \/>\nand free the bis structure, causing hci_dev_lock(bis-&gt;hdev) to access memory<br \/>\nafter it is freed, fix this by using the hdev reference which was safely<br \/>\nacquired via iso_conn_get_hdev().<\/p>\n<p>  Severity: 0.0 | NA<\/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-2026-53276 Published : June 25, 2026, 8:39 a.m. | 1\u00a0hour, 4\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer In iso_sock_rebind_bc(), the bis pointer is cached, then the socket lock is dropped: bis = iso_pi(sk)-&gt;conn-&gt;hcon; \/* Release the socket before &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-81061","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81061","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=81061"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81061\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}