CVE-2026-43059

A flaw was found in the Linux kernel's Bluetooth Management (MGMT) component. This vulnerability arises from incorrect handling of pending commands within the Bluetooth subsystem's command completion processes. An attacker with local access could exploit this issue to trigger memory corruption and Use-After-Free (UAF) conditions, potentially leading to a kernel panic and a Denial of Service (DoS) for the system. Use-After-Free is a memory safety flaw where a program attempts to use memory after it has been freed, which can lead to unpredictable behavior or system crashes.

Red Hat acknowledges the upstream Linux kernel correction for «Bluetooth» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

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.