The "stub_send_ret_submit()" function (drivers/usb/usbip/stub_tx.c) in the Linux kernel can allow an attacker to cause a denial of service (NULL pointer dereference) via a specially crafted USB over IP packet.
An upstream patch:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1541283]
This was fixed in the 4.14.8 stable updates for Fedora.
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, and 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64, and Red Hat Enterprise Linux 7 for Power 9 LE, as the code with the flaw is not enabled and is not built in the products listed.