CVE-2016-7422

Impact:
Low
Public Date:
2016-09-15
CWE:
CWE-476
Bugzilla:
1376755: CVE-2016-7422 Qemu: virtio: null pointer dereference in virtqueu_map_desc

The MITRE CVE dictionary describes this issue as:

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.

Find out more about CVE-2016-7422 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 2.6
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector Adjacent Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
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 Enterprise Linux OpenStack Platform 5.0 (Icehouse) qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 7 qemu-kvm Not affected
Red Hat Enterprise Linux 6 qemu-kvm Not affected
Red Hat Enterprise Linux 5 xen Not affected
Red Hat Enterprise Linux 5 kvm Not affected

Acknowledgements

Red Hat would like to thank Qinghao Tang (360.cn Marvel Team) and Zhenhao Hong (360.cn Marvel Team) for reporting this issue.

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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