Description
An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA device implementation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati_2d.c while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_misc
https://git.qemu.org/?p=qemu.git
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1847584
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20201123-0003/
Scores
CVSS v3
5.5
EPSS
0.0015
EPSS Percentile
34.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-125
CWE-787
Status
published
Products (2)
qemu/qemu
5.0.0 rc0 (2 CPE variants)
qemu/qemu
< 4.2.1
Published
Oct 16, 2020
Tracked Since
Feb 18, 2026