CVE-2021-3573
- State
- Published
- Severity
- Not scored
- Published
- Aug 13, 2021
- Updated
- Aug 3, 2024
- Reserved
- Jun 1, 2021
Description
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-362 >CWE-416
Affected Products
| Product | Versions |
|---|---|
kerneln/a |
|
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
- [oss-security] 20230702 CVE-2023-3439: Linux MCTP use-after-free in mctp_sendmsgmailing-list
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