PT-2021-4571 · FFmpeg+5 · Ffmpeg+5

Maryam Ebrahimzadeh · Published 2021-08-03 · Updated 2026-02-06 · CVE-2021-38114

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions FFmpeg versions 4.4

Description The issue is related to the libavcodec/dnxhddec.c component of the FFmpeg multimedia library, where the return value of the init vlc function is not properly checked. This could allow a remote attacker to cause a denial of service.

Recommendations For FFmpeg version 4.4, consider updating to a newer version that addresses this issue, as the current version does not properly check the return value of the init vlc function, which could lead to a denial of service. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Unchecked Return Value

Weakness Enumeration

CWE-252

Related Identifiers

ALT-PU-2021-2900

ALT-PU-2021-2999

ALT-PU-2021-3166

ALT-PU-2021-3508

ALT-PU-2021-3575

ALT-PU-2022-1821

BDU:2021-05242

CLEANSTART-2026-EZ98723

CLEANSTART-2026-PS82605

CLEANSTART-2026-XE32069

CVE-2021-38114

DLA-2742-1

DSA-4990-1

DSA-4998-1

MGASA-2021-0495

OESA-2022-1808

OPENSUSE-SU-2021:2919-1

OPENSUSE-SU-2021_2919-1

OPENSUSE-SU-2024:10754-1

SUSE-SU-2021:2919-1

SUSE-SU-2021:2929-1

USN-5167-1

USN-5472-1

Affected Products

Alt Linux

Astra Linux

Ffmpeg

Linuxmint

Suse

Ubuntu

References · 324

• https://github.com/FFmpeg/FFmpeg/commit/7150f9575671f898382c370acae35f9087a30ba1 · Patch
• https://ubuntu.com/security/CVE-2020-22022 · Vendor Advisory
• https://debian.org/security/2021/dsa-4946 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-22036 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-22017 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-24020 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-30123 · Security Note
• https://osv.dev/vulnerability/USN-5472-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-20453 · Security Note
• https://ubuntu.com/security/CVE-2020-22044 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-13302 · Security Note
• https://ubuntu.com/security/CVE-2020-21688 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-38291 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-22025 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5167-1 · Vendor Advisory