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. References: https://secuniaresearch.flexerasoftware.com/secunia_research/2017-21/ https://www.spinics.net/lists/linux-usb/msg163480.html An upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be6123df1ea8f01ee2f896a16c2b7be3e4557a5a
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1541283]
This was fixed in the 4.14.8 stable updates for Fedora.
Statement: 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.