DEBIAN-CVE-2021-3682

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Source
https://security-tracker.debian.org/tracker/CVE-2021-3682
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3682.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-3682
Upstream
Published
2021-08-05T20:15:09Z
Modified
2025-09-25T23:25:23.180398Z
Severity
  • 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

References

Affected packages

Debian:11 / 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
1:5.2+dfsg-11+deb11u1

Affected versions

1:5.*

1:5.2+dfsg-11

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

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
1:6.0+dfsg-3

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
1:6.0+dfsg-3

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
1:6.0+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}