CVE-2021-3520

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    CVE-2021-3520

    Published: 2 Jun 2021Last Modified: 20 Oct 2026

    Summary:

    Details: There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.

    References: https://cert-portal.siemens.com/productcert/html/ssa-398330.html, https://security.netapp.com/advisory/ntap-20211104-0005/, https://bugzilla.redhat.com/show_bug.cgi?id=1954559, https://www.oracle.com//security-alerts/cpujul2021.html, https://www.oracle.com/security-alerts/cpuapr2022.html, https://www.oracle.com/security-alerts/cpuoct2021.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 641b453d9db536ee020851bfcb1dc39f61006f0a
    Fixed -5ff839680134437dbf4678f3d0c7b371d84f4964

    Affected versions

    v1.9.3
    v1.9.1
    v1.9.0

    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-2021-3520 | CVE-DB