CVE-2016-9922

MEDIUM

Qemu < 2.7.1 - Divide By Zero

Title source: rule

Description

The cirrus_do_copy function in hw/display/cirrus_vga.c in QEMU (aka Quick Emulator), when cirrus graphics mode is VGA, allows local guest OS privileged users to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving blit pitch values.

References (8)

[Various Sources] http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=4299b90e9ba9ce5ca9024572804ba751aa1a7e70

[Mailing List, Patch, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/12/09/1

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/94803

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

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

[Issue Tracking, Patch] https://bugzilla.redhat.com/show_bug.cgi?id=1334398

[Third Party Advisory] https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

[Patch, Vendor Advisory] https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg00442.html

Scores

CVSS v3 5.5

EPSS 0.0009

EPSS Percentile 25.9%

Attack Vector LOCAL

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

Classification

CWE

CWE-369

Status draft

Affected Products (4)

qemu/qemu < 2.7.1

qemu/qemu

qemu/qemu

qemu/qemu

Timeline

Published Mar 27, 2017

Tracked Since Feb 18, 2026