CVE-2021-38171

    Dashboard / Vulnerabilities / CVE-2021-38171

    CVE-2021-38171

    Published: 21 Aug 2021Last Modified: 17 Aug 2026

    Summary:

    Details: adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.

    References: https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/, https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html, https://security.gentoo.org/glsa/202312-14, https://www.debian.org/security/2021/dsa-4990, https://www.debian.org/security/2021/dsa-4998, https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8
    Fixed -None

    Affected versions

    4.4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-38171 | CVE-DB