CVE-2026-45836: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()
Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockgetsndtimeocb()
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 already present in the Bluetooth L2CAP fix to l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45836?
The severity of CVE-2026-45836 is rated at 27, indicating a potential risk level that should be addressed promptly.
How do I fix CVE-2026-45836?
To fix CVE-2026-45836, update your Linux kernel to the latest stable version where this vulnerability has been patched.
What type of vulnerability is CVE-2026-45836?
CVE-2026-45836 is a null pointer dereference vulnerability found in the Bluetooth L2CAP component of the Linux kernel.
What systems are affected by CVE-2026-45836?
CVE-2026-45836 affects systems running vulnerable versions of the Linux kernel that utilize Bluetooth L2CAP.
Is CVE-2026-45836 remotely exploitable?
CVE-2026-45836 is not known to be remotely exploitable, but could lead to application crashes in affected systems.