CVE-2021-3573

Summary

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.

Affected Software

Weaknesses

• CWE-362: CWE-362->CWE-416

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.redhat.com/show_bug.cgi?id=1966578
• https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git/commit/?id=e305509e678b3a4af2b3cfd410f409f7cdaabb52
• https://www.openwall.com/lists/oss-security/2021/06/08/2
• http://www.openwall.com/lists/oss-security/2023/07/02/1

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1966578
• https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git/commit/?id=e305509e678b3a4af2b3cfd410f409f7cdaabb52
• https://www.openwall.com/lists/oss-security/2021/06/08/2
• http://www.openwall.com/lists/oss-security/2023/07/02/1

• ←Previous
• Next→