The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to negative pitch.
http://www.openwall.com/lists/oss-security/2018/01/15/3
http://www.securityfocus.com/bid/102520
https://git.qemu.org/?p=qemu.git;a=commit;h=f153b563f8cf121aebf5a2fff5f0110faf58ccb3
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
Source: MITRE
Published: 2018-01-23
Updated: 2020-09-10
Type: CWE-125
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 4.4
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 0.8
Severity: MEDIUM