CVE-2026-45835
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, a null-ptr-deref vulnerability was found in the Bluetooth L2CAP stack in the l2cap_sock_new_connection_cb() function. The fix adds a missing NULL check already present in similar functions l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
Risk Assessment
An attacker could remotely cause a kernel panic or potentially gain unauthorized access to kernel memory, compromising system confidentiality and availability.
Recommendation
Immediately update the Linux kernel to a version containing the fix (commit addressing CVE-2026-45835). For embedded systems with Bluetooth, prioritize applying the security patch.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().