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CVE-2020-14339

HIGH
8.8
CVSS Score
Published: December 3, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 02:54 AM UTC
2 products affected across 1 vendorEnterprise LinuxLibvirt

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Enterprise Linux· Red Hatrpm
95%
8.0
Libvirt· Red Hat
95%
6.2.0 ≤ v < 6.7.06.6.0
Affected range stops below 6.7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1860069
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202101-22
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202210-06

CVSS

8.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-772

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