CVE-2021-4156

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    CVE-2021-4156

    Published: 23 Mar 2022Last Modified: 15 Mar 2026

    Summary:

    Details: An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

    References: https://lists.debian.org/debian-lts-announce/2025/12/msg00013.html, https://security.gentoo.org/glsa/202309-11, https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html, https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html, https://bugzilla.redhat.com/show_bug.cgi?id=2027690, https://github.com/libsndfile/libsndfile/issues/731, https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2021-4156 | CVE-DB