CVE-2016-7466

Impact:
Low
Public Date:
1016-09-13
CWE:
CWE-119
Bugzilla:
1377837: CVE-2016-7466 Qemu: usb: xhci memory leakage during device unplug
A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, which affected other services on the host. A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance.

Find out more about CVE-2016-7466 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 2.3
Base Metrics AV:A/AC:M/Au:S/C:N/I:N/A:P
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 3
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
Attack Vector Adjacent Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality None
Integrity Impact None
Availability Impact Low

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat OpenStack Platform 8.0 (Liberty) (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01
Red Hat OpenStack Platform 11.0 (Ocata) (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts (qemu-kvm-rhev) RHSA-2017:2392 2017-08-01
Red Hat OpenStack Platform 10 (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01
Red Hat OpenStack Platform 9.0 (qemu-kvm-rhev) RHSA-2017:2408 2017-08-01

Affected Packages State

Platform Package State
Red Hat OpenStack Platform 12.0 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) qemu-kvm-rhev Will not fix
Red Hat Enterprise Linux 7 qemu-kvm Not affected
Red Hat Enterprise Linux 6 qemu-kvm Not affected
Red Hat Enterprise Linux 5 kvm Not affected
Red Hat Enterprise Linux 5 xen Not affected

Acknowledgements

Red Hat would like to thank Li Qiang (360.cn Inc.) for reporting this issue.

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