DEBIAN-CVE-2020-27821

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2020-27821
Downstream
DLA-3099-1
Published: 08 Dec 2020, 22:15
Last modified:28 Apr 2026, 20:19

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Dec 2020, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:19
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Affected Systems

  • debian•qemu

    < 1:5.2+dfsg-3 | < 1:5.2+dfsg-3 | < 1:5.2+dfsg-3 | < 1:5.2+dfsg-3

References (1)