CVE-2016-7170

Publication date 9 September 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The vmsvga_fifo_run function in hw/display/vmware_vga.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to cursor.mask[] and cursor.image[] array sizes when processing a DEFINE_CURSOR svga command.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	16.10 yakkety	Fixed 1:2.6.1+dfsg-0ubuntu5.1
	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.6
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.30
	12.04 LTS precise	Not in release
qemu-kvm	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Fixed 1.0+noroms-0ubuntu14.31

Notes

tyhicks

vmsvga_fifo_run() in 12.04's qemu-kvm is slightly different but still looks to be affected

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=167d97a3def77ee2dbf6e908b0ecbfe2103977db

Severity score breakdown

Parameter	Value
Base score	4.4 · Medium
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