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.
Published: 2020-12-08
Score: 6.0 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3099-1 qemu security update
EUVD EUVD EUVD-2020-20322 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.
Ubuntu USN Ubuntu USN USN-4725-1 QEMU vulnerabilities
History

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Debian Debian Linux
Qemu Qemu
Redhat Advanced Virtualization Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-04T16:25:42.445Z

Reserved: 2020-10-27T00:00:00.000Z

Link: CVE-2020-27821

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-12-08T22:15:18.587

Modified: 2024-11-21T05:21:52.553

Link: CVE-2020-27821

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-12-03T00:00:00Z

Links: CVE-2020-27821 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses