A use-after-free in function hci_sock_bound_ioctl() of...
Moderate severity
Unreviewed
Published
May 24, 2022
to the GitHub Advisory Database
•
Updated Jul 2, 2023
Description
Published by the National Vulnerability Database
Aug 13, 2021
Published to the GitHub Advisory Database
May 24, 2022
Last updated
Jul 2, 2023
A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.
References