CVE-2016-6888

MEDIUM

Qemu < 2.6.2 - Integer Overflow

Title source: rule

Description

Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference.

References (9)

[Patch] http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=47882fa4975bf0b58dd74474329fdd7154e8f04c

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/08/19/10

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/08/19/6

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/92556

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

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

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html

[Patch, Third Party Advisory] https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.html

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

Scores

CVSS v3 4.4

EPSS 0.0010

EPSS Percentile 26.9%

Attack Vector LOCAL

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

Classification

CWE

CWE-190

Status published

Affected Products (14)

qemu/qemu < 2.6.2

qemu/qemu

qemu/qemu

qemu/qemu

qemu/qemu

debian/debian_linux

redhat/virtualization

redhat/openstack

redhat/openstack

redhat/openstack

redhat/openstack

redhat/openstack

redhat/openstack

n/a/n/a

Timeline

Published Dec 10, 2016

Tracked Since Feb 18, 2026