SB2025062065 - Improper locking in Linux kernel net bluetooth
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025062065
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-50166)
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.
Remediation
Install update from vendor's website.
References
- 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