SB2026021683 - NULL pointer dereference in Linux kernel bluetooth driver
Published: February 16, 2026
Security Bulletin ID
SB2026021683
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) NULL pointer dereference (CVE-ID: CVE-2026-23146)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the hci_uart_register_dev() and hci_uart_set_proto() functions in drivers/bluetooth/hci_ldisc.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/03e8c90c62233382042b7bd0fa8b8900552fdb62
- https://git.kernel.org/stable/c/0c3cd7a0b862c37acbee6d9502107146cc944398
- https://git.kernel.org/stable/c/186d147cf7689ba1f9b3ddb753ab634a84940cc9
- https://git.kernel.org/stable/c/53e54cb31e667fca05b1808b990eac0807d1dab0
- https://git.kernel.org/stable/c/937a573423ce5a96fdb1fd425dc6b8d8d4ab5779
- https://git.kernel.org/stable/c/b0a900939e7e4866d9b90e9112514b72c451e873
- https://git.kernel.org/stable/c/ccc683f597ceb28deb966427ae948e5ac739a909