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 before 5.13-rc5.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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linux linux kernel 5.13 |
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linux linux kernel |
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redhat enterprise linux 7.0 |
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redhat enterprise linux 6.0 |
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redhat enterprise linux 8.0 |
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fedoraproject fedora 34 |