Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync hci_conn lookup and field access must be covered by hdev lock in set_cig_params_sync, otherwise it’s possible it is freed concurrently. Take hdev lock to prevent hci_conn from being deleted or modified concurrently. Just RCU lock is not suitable here, as we also want to avoid “tearing” in the configuration. A flaw was found in the Linux kernel’s Bluetooth component. Improper synchronization in theset_cig_params_sync function can lead to a use-after-free (UAF) vulnerability. This issue arises when hci_conn objects are accessed without proper locking, allowing them to be freed concurrently. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.
Details
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 13 | Planned | — |
| Ubuntu 24.04 | Planned | — |