CVE-2020-27821

 

Published at: - 08-12-2020 11:15

Last modified: - 05-09-2022 08:15

Total changes: - 5

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1902651
• [oss-security] 20201216 CVE-2020-27821 QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c-Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210115-0006/
• [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update-

 

Keywords

NVD

 

CVE-2020-27821

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures