CVE-2026-45834: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()
Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockstatechangecb()
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.141.1-1 - Compensating control
Add the same NULL guard used in l2cap_sock_state_change_cb() to l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45834?
The severity of CVE-2026-45834 is rated at 15, indicating a critical risk level.
How do I fix CVE-2026-45834?
To fix CVE-2026-45834, update the Linux kernel to the latest version where this vulnerability has been patched.
What does CVE-2026-45834 affect?
CVE-2026-45834 affects the Bluetooth L2CAP functionality in the Linux kernel.
What is the impact of CVE-2026-45834?
The impact of CVE-2026-45834 can lead to a null pointer dereference in the L2CAP socket state change, which may cause system crashes.
When was CVE-2026-45834 published?
CVE-2026-45834 was published on May 26, 2026.