CVE-2016-7422

MEDIUM

Qemu < 2.7.1 - Buffer Overflow

Title source: rule

Description

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.

References (9)

[Patch] http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/09/16/10

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/09/16/4

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/92996

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2017:2392

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2017:2408

[Patch, Third Party Advisory] https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.html

[Third Party Advisory] https://security.gentoo.org/glsa/201609-01

Scores

CVSS v3 6.0

EPSS 0.0009

EPSS Percentile 26.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Classification

CWE

CWE-120

Status published

Affected Products (10)

qemu/qemu < 2.7.1

opensuse/leap

redhat/openstack

redhat/virtualization

n/a/n/a

Timeline

Published Dec 10, 2016

Tracked Since Feb 18, 2026