CVE-2021-31870

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    CVE-2021-31870

    Published: 30 Apr 2021Last Modified: 15 Mar 2026

    Summary:

    Details: An issue was discovered in klibc before 2.0.9. Multiplication in the calloc() function may result in an integer overflow and a subsequent heap buffer overflow.

    References: https://kernel.org/pub/linux/libs/klibc/2.0/, https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html, https://lists.zytor.com/archives/klibc/2021-April/004593.html, http://www.openwall.com/lists/oss-security/2021/04/30/1, https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=292650f04c2b5348b4efbad61fb014ed09b4f3f2

    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-2021-31870 | CVE-DB