In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: ISO: avoid deadlocks in iso_sock_timeout<\/p>\n
iso_sock_timeout() takes lock_sock, so sync disabling the timer while
\nholding that lock may deadlock.<\/p>\n
iso_sock_timeout() may also run concurrently with iso_conn_del(), which
\nleads to UAF<\/p>\n
[Task 1] [Task hdev->workqueue]
\n iso_sock_timeout iso_conn_del
\n iso_conn_hold_unless_zero iso_chan_del
\n `————> iso_conn_put
\n caller frees hcon
\n iso_conn_put
\n iso_conn_free
\n conn->hcon->iso_data = NULL; \/* UAF *\/<\/p>\n
Fix the deadlock by removing the disable from the lock_sock sections.
\nMove the timer from iso_conn to iso_pinfo to decouple it from iso_conn
\nwhich may need to be freed in lock_sock section. Convert some of the
\nclear_timer to disable_timer.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: ISO: avoid deadlocks in iso_sock_timeout<\/p>\n
iso_sock_timeout() takes lock_sock, so sync disabling the timer while
\nholding <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7544","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7544","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=7544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}