CVE-2021-3582

QEMU: pvrdma: unproperly mremap in pvrdma_map_to_pdir()

Published Mar 25, 2022 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3099-1 qemu security update
EUVD EUVD EUVD-2021-26891 A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.
Ubuntu USN Ubuntu USN USN-5010-1 QEMU vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 3, 2024, 5:01 PM
Reserved
Jun 7, 2021, 12:00 AM
Status
Modified
Published
Mar 25, 2022, 7:15 PM
Modified
Jun 17, 2026, 4:05 AM
Severity
Low
Public date
Jun 16, 2021, 12:00 AM