CVE-2016-7170

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-10 · updated 2026-06-17
Weakness: CWE-129

Description

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.

Affected products

Debian Linux: 8.0
openSUSE Leap: 42.2
QEMU: through 2.7.1

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=167d97a3def77ee2dbf6e908b0ecbfe2103977db
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
http://www.openwall.com/lists/oss-security/2016/09/09/4
http://www.openwall.com/lists/oss-security/2016/09/09/7
http://www.securityfocus.com/bid/92904
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg01764.html
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=167d97a3def77ee2dbf6e908b0ecbfe2103977db
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
http://www.openwall.com/lists/oss-security/2016/09/09/4
http://www.openwall.com/lists/oss-security/2016/09/09/7
http://www.securityfocus.com/bid/92904

Get alerted when CVE-2016-7170 or the next vulnerability affects your stack