Linux Kernel IDPF RDMA VPort NULL Pointer Dereference Vulnerability

A vulnerability in the Linux kernel's Intel IDPF driver can lead to a NULL pointer dereference. This issue occurs when a virtual port (vport) does not have RDMA support enabled, causing the driver to skip allocating necessary vdev_info. When the auxiliary device is unplugged, the driver references vdev_info for all vports, regardless of whether it was allocated, leading to a kernel crash.

Impact

Exploitation of this vulnerability causes a kernel NULL pointer dereference, which can lead to a system crash.

Remediation

Users can apply the patch available in the Linux kernel stable tree to address this vulnerability.