DEBIAN-CVE-2021-4145

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Source
https://security-tracker.debian.org/tracker/CVE-2021-4145
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4145.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-4145
Upstream
Published
2022-01-25T20:15:08Z
Modified
2025-09-25T22:40:32Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The self pointer is dereferenced in mirrorwaiton_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

References

Affected packages

Debian:12 / qemu

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:6.2+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / qemu

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:6.2+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / qemu

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:6.2+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}