CVE-2020-27821

medium

Description

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1902651

https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

https://security.netapp.com/advisory/ntap-20210115-0006/

http://www.openwall.com/lists/oss-security/2020/12/16/6

Details

Source: Mitre, NVD

Published: 2020-12-08

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 6

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Severity: Medium