Improper locking in Linux kernel - CVE-2022-50166
Published: June 20, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111574
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-50166
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the handle_cmd_cnt_and_timer() function in net/bluetooth/hci_event.c, within the hci_dev_do_reset() and hci_cmd_work() functions in net/bluetooth/hci_core.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50166
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/3b382555706558f5c0587862b6dc03e96a252bba
- https://git.kernel.org/stable/c/4bf367fa1fefabdf14938d0ac9ed60020389112e
- https://git.kernel.org/stable/c/877afadad2dce8aae1f2aad8ce47e072d4f6165e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0