Vigil@nce - QEMU: memory leak via ehci_process_itd
October 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker, inside a guest system, can create a memory leak via
ehci_process_itd() of QEMU, in order to trigger a denial of
service on the host system.
– Impacted products: Fedora, QEMU.
– Severity: 1/4.
– Creation date: 07/10/2016.
DESCRIPTION OF THE VULNERABILITY
The QEMU product emulates USB EHCI (Enhanced Host Controller
Interface).
However, the memory allocated to process ehci_process_itd() is
never freed.
An attacker, inside a guest system, can therefore create a memory
leak via ehci_process_itd() of QEMU, in order to trigger a denial
of service on the host system.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/QEMU-memory-leak-via-ehci-process-itd-20803