CVE-2016-6351

Publication date 27 July 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.3
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.26
	12.04 LTS precise	Not in release
qemu-kvm	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected

Notes

mdeslaur

qemu-kvm in precise doesn't build esp.c on Ubuntu

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qemu	Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=926cde5f3e4d2504ed161ed0cb771ac7cad6fd11 Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=cc96677469388bad3d66479379735cf75db069e3

Severity score breakdown

Parameter	Value
Base score	6.7 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3047-1
QEMU vulnerabilities
4 August 2016