CVE-2021-3638
MEDIUMQEMU 4.0.0-6.0.0 - Out-of-bounds Write in ATI VGA Device Emulation
Title source: llmDescription
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
References (6)
Core 6
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/
Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1979858
Exploit, Mailing List, Patch, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220407-0003/
Third Party Advisory
https://ubuntu.com/security/CVE-2021-3638
Scores
CVSS v3
6.5
EPSS
0.0002
EPSS Percentile
5.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Details
CWE
CWE-787
Status
published
Products (3)
fedoraproject/fedora
36
fedoraproject/fedora
37
qemu/qemu
4.0.0 - 6.1.0
Published
Mar 03, 2022
Tracked Since
Feb 18, 2026