In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: mgmt: fix UAF in pair command cancellation<\/p>\n
The pairing completion and authentication failure callbacks look up the
\npending MGMT_OP_PAIR_DEVICE command by walking hdev->mgmt_pending. The
\nlookup returned a command that was still linked on the shared pending list,
\nwithout keeping mgmt_pending_lock held for the later dereference and
\nremoval.<\/p>\n
A concurrent MGMT_OP_CANCEL_PAIR_DEVICE request can remove and free the
\nsame pending command before the callback uses it. The reverse race is also
\npossible when cancel_pair_device() gets a command from pending_find() and a
\ncallback removes it before the cancel path dereferences it. This can lead
\nto a use-after-free and a second list_del().<\/p>\n
Make the pairing lookup helpers transfer ownership of the pending command
\nby removing it from hdev->mgmt_pending while holding mgmt_pending_lock.
\nThe callbacks and cancel path then complete the command and free it
\ndirectly, so racing paths cannot find or free the same command again. Take
\na temporary hci_conn reference in cancel_pair_device() because the command
\ncompletion drops the reference stored in the pending command.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: mgmt: fix UAF in pair command cancellation<\/p>\n
The pairing completion and authentication failure callbacks look up the
\npend<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7506","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7506","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=7506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}