UBUNTU-CVE-2021-31873

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    UBUNTU-CVE-2021-31873

    Published: 30 Apr 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-31873
    Aliases:
    USN-5379-1

    Summary:

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

    References: https://ubuntu.com/security/CVE-2021-31873, https://kernel.org/pub/linux/libs/klibc/2.0/, https://lists.zytor.com/archives/klibc/2021-April/004593.html, https://ubuntu.com/security/notices/USN-5379-1, https://www.cve.org/CVERecord?id=CVE-2021-31873

    Affected packages

    Package

    Name: klibc

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.3-0ubuntu1.14.04.3+esm2

    Affected versions

    2.0.1-3.1ubuntu2
    2.0.2-1ubuntu1
    2.0.2-1ubuntu2
    2.0.3-0ubuntu1
    2.0.3-0ubuntu1.14.04.1
    2.0.3-0ubuntu1.14.04.2
    2.0.3-0ubuntu1.14.04.3

    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
    UBUNTU-CVE-2021-31873 | CVE-DB