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CVE-2016-6490

Published: 10 December 2016

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.

Notes

AuthorNote
mdeslaur
introduced in 2.6.0

Priority

Medium

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(code not present)
upstream Needs triage

wily Ignored
(end of life)
xenial Not vulnerable
(code not present)
Patches:
upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=1e7aed70144b4673fc26e73062064b6724795e5f
qemu-kvm
Launchpad, Ubuntu, Debian
precise Not vulnerable
(code not present)
trusty Does not exist

upstream Needs triage

wily Does not exist

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 4.4
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H