SB2025120868 - Use-after-free in Linux kernel bluetooth
Published: December 8, 2025
Security Bulletin ID
SB2025120868
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-40284)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mgmt_index_removed() function in net/bluetooth/mgmt.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa
- https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961
- https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b
- https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76
- https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea