DEBIAN-CVE-2020-21688

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Source
https://security-tracker.debian.org/tracker/CVE-2020-21688
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21688.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2020-21688
Upstream
Published
2021-08-10T21:15:07.723Z
Modified
2025-11-20T10:15:34.856797Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.

References

Affected packages

Debian:11 / ffmpeg

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:4.3.3-0+deb11u1

Affected versions

7:4.*
7:4.3.2-0+deb11u2
7:4.3.2-1
7:4.3.2-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21688.json"

Debian:12 / ffmpeg

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:4.4-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21688.json"

Debian:13 / ffmpeg

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:4.4-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21688.json"

Debian:14 / ffmpeg

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:4.4-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21688.json"