CVE-2026-43018

A flaw was found in the Linux kernel's Bluetooth component. This Use-After-Free (UAF) vulnerability arises from insufficient locking during hci_conn lookup and access within the hci_le_remote_conn_param_req_evt function. An attacker could potentially exploit this to cause a system crash or execute arbitrary code.

HCI LE remote connection parameter request event handling could UAF if connection state races teardown. Red Hat advises Bluetooth users to patch; unload bluetooth as operational workaround.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the bluetooth module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.