In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: hci_conn: fix the SCO setup context lifetime<\/p>\n
hci_setup_sync() queues a conn_handle_t with a NULL destroy callback, so
\nthe context is only freed if hci_enhanced_setup_sync() actually runs. An
\nentry that is cancelled instead is leaked, as
\n_hci_cmd_sync_cancel_entry() does not release entry->data when there is
\nno destroy callback, and hci_cmd_sync_clear() cancels every pending entry
\nwhen the controller is unregistered.<\/p>\n
The context also stores a bare hci_conn pointer, so the connection can be
\nfreed while the work is queued. The dequeue in hci_conn_del() does not
\ncover it either, as it matches on entry->data == conn and entry->data is
\nthe wrapper here. Same problem as commit 2f5d635ad590 (“Bluetooth:
\nhci_sync: hold conn in hci_connect_acl\/le_sync() callbacks”).<\/p>\n
Hold the connection and release both from a destroy callback. The
\nsubmission failure path drops both, since hci_cmd_sync_submit() does not
\ncall the destroy callback when it fails to queue.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: hci_conn: fix the SCO setup context lifetime<\/p>\n
hci_setup_sync() queues a conn_handle_t with a NULL destroy callback, so
\nt<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25664","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25664","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=25664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}