CVE-2016-6490 Information

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 (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.

CVSS Vector

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

Reference

http://git.qemu.org/?p=qemu.git;a=commit;h=1e7aed70144b4673fc26e73062064b6724795e5f http://www.openwall.com/lists/oss-security/2016/07/28/4 http://www.openwall.com/lists/oss-security/2016/07/28/9 https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html https://security.gentoo.org/glsa/201609-01

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.4