CVE-2016-7466

MEDIUM

QEMU < 2.7.1 - Denial of Service via USB Device Unplug Memory Leak

Title source: llm
STIX 2.1

Description

Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.

References (9)

Core 9
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/09/19/8
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/09/20/3
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201611-11
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93029
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2392
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
Patch, Third Party Advisory mailing-list x_refsource_mlist
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2408

Scores

CVSS v3 6.0
EPSS 0.0009
EPSS Percentile 25.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Details

CWE
CWE-772
Status published
Products (9)
opensuse/leap 42.2
qemu/qemu < 2.7.1
redhat/openstack 6.0
redhat/openstack 7.0
redhat/openstack 8
redhat/openstack 9
redhat/openstack 10
redhat/openstack 11
redhat/virtualization 4.0
Published Dec 10, 2016
Tracked Since Feb 18, 2026