DEBIAN-CVE-2021-3975

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Source
https://security-tracker.debian.org/tracker/CVE-2021-3975
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3975.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-3975
Upstream
Published
2022-08-23T20:15:08Z
Modified
2025-09-25T23:27:07.121738Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

References

Affected packages

Debian:11 / libvirt

Package

Name
libvirt
Purl
pkg:deb/debian/libvirt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.0.0-3+deb11u3

Affected versions

7.*

7.0.0-3
7.0.0-3+deb11u1
7.0.0-3+deb11u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / libvirt

Package

Name
libvirt
Purl
pkg:deb/debian/libvirt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.6.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / libvirt

Package

Name
libvirt
Purl
pkg:deb/debian/libvirt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.6.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / libvirt

Package

Name
libvirt
Purl
pkg:deb/debian/libvirt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.6.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}