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CVE-2016-2391

Published: 17 February 2016

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.

Notes

AuthorNote
tyhicks
privileged users inside the guest can trigger a DoS but they
could also simply shut down the guest
mdeslaur
in hw/usb-ohci.c in precise

Priority

Low

Cvss 3 Severity Score

5.0

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (2.0.0+dfsg-2ubuntu1.24)
upstream Needed

vivid Ignored
(end of life, was needed)
wily
Released (1:2.3+dfsg-5ubuntu9.4)
xenial
Released (1:2.5+dfsg-5ubuntu10.1)
Patches:
upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=fa1298c2d623522eda7b4f1f721fcb935abb7360
qemu-kvm
Launchpad, Ubuntu, Debian
precise
Released (1.0+noroms-0ubuntu14.28)
trusty Does not exist

upstream Needed

vivid Does not exist

wily Does not exist

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 5.0
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H