DEBIAN-CVE-2021-22945

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Source
https://security-tracker.debian.org/tracker/CVE-2021-22945
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22945.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-22945
Upstream
Published
2021-09-23T13:15:08Z
Modified
2025-09-30T05:14:47.388385Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
[none]
Details

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again.

References

Affected packages

Debian:11 / curl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.74.0-1.3+deb11u2

Affected versions

7.*

7.74.0-1.3
7.74.0-1.3+deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / curl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.79.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / curl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.79.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / curl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.79.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}