CVE-2024-56604

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.74

Description A vulnerability in the Linux kernel's Bluetooth RFCOMM implementation could lead to a use-after-free issue. This occurs because bt sock alloc() attaches an allocated sk object to the provided sock object, and if rfcomm dlc alloc() fails, the sk object is released, but a dangling pointer remains in the sock object. The issue is resolved by swapping the calls to bt sock alloc() and rfcomm dlc alloc().

Recommendations For Linux kernel versions prior to 6.6.74, update to version 6.6.74 or later to resolve the issue. As a temporary workaround, consider restricting the use of Bluetooth RFCOMM functionality until the update is applied.