{"id":17266,"date":"2026-09-05T02:30:56","date_gmt":"2026-09-04T18:30:56","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80762"},"modified":"2026-09-05T02:30:56","modified_gmt":"2026-09-04T18:30:56","slug":"cve-2026-80762","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80762","title":{"rendered":"CVE-2026-80762 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync:"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>Bluetooth: hci_sync: Fix accept list UAF during suspend<\/p>\n<p>hci_update_event_filter_sync() walks hdev-&gt;accept_list while sending a<br \/>\nsynchronous HCI command for each remote-wakeup device.  The suspend path<br \/>\nholds hdev-&gt;req_lock, but accept-list updates are serialized by hdev-&gt;lock.<br \/>\nConsequently, remove_device() can free the current list entry during the<br \/>\ncontroller wait.<\/p>\n<p>The following interleaving causes the use-after-free:<\/p>\n<p>  hci_update_event_filter_sync()    remove_device()<br \/>\n  fetch accept-list entry<br \/>\n  hci_set_event_filter_sync()<br \/>\n    wait for controller response    hci_dev_lock()<br \/>\n                                    list_del()<br \/>\n                                    kfree()<br \/>\n                                    hci_dev_unlock()<br \/>\n  read the freed list.next<\/p>\n<p>KASAN reported:<\/p>\n<p>  BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835\/0x910<br \/>\n  Read of size 8 at addr ffff88810bec8440 by task kworker\/0:1\/10<br \/>\n  Workqueue: events vhci_suspend_work<br \/>\n  Call Trace:<br \/>\n   hci_suspend_sync+0x835\/0x910<br \/>\n   hci_suspend_dev+0x182\/0x450<br \/>\n   process_one_work+0x661\/0x1090<br \/>\n   worker_thread+0x45b\/0xd10<\/p>\n<p>  Allocated by task 86:<br \/>\n   hci_bdaddr_list_add_with_flags+0x1a8\/0x400<br \/>\n   add_device+0x381\/0x820<br \/>\n   hci_sock_sendmsg+0x1033\/0x1ea0<\/p>\n<p>  Freed by task 91:<br \/>\n   kfree+0x131\/0x3c0<br \/>\n   remove_device+0x429\/0xb70<br \/>\n   hci_sock_sendmsg+0x1033\/0x1ea0<\/p>\n<p>Snapshot the remote-wakeup addresses under hdev-&gt;lock.  Release the lock<br \/>\nbefore sending HCI commands.  Clear the controller event filter before<br \/>\nbuilding the snapshot, and skip allocation and the second list traversal<br \/>\nwhen there are no matching entries.  This preserves the original filter<br \/>\nand scan-state updates without retaining an accept-list node across a<br \/>\ncontroller wait.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>Bluetooth: hci_sync: Fix accept list UAF during suspend<\/p>\n<p>hci_update_event_filter_sync() walks hdev-&gt;accept_list while sending a<br \/>\nsyn<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17266","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}