VYPR
High severity8.8NVD Advisory· Published Dec 3, 2020· Updated Jun 17, 2026

CVE-2020-14339

CVE-2020-14339

Description

A flaw was found in libvirt, where it leaked a file descriptor for /dev/mapper/control into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

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Affected products

82

Patches

Vulnerability mechanics

References

3

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