USN-4727-1

    Dashboard / Vulnerabilities / USN-4727-1

    USN-4727-1

    Published: 10 Feb 2021Last Modified: 10 Feb 2026

    Summary: linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oem-5.6, linux-oracle, linux-raspi vulnerability

    Details: Alexander Popov discovered that multiple race conditions existed in the AF_VSOCK implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

    References: https://ubuntu.com/security/notices/USN-4727-1, https://ubuntu.com/security/CVE-2021-26708

    Affected packages

    Package

    Name: linux-hwe-5.8

    Purl: pkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.8.0-43.49~20.04.1

    Affected versions

    5.8.0-23.24~20.04.1
    5.8.0-25.26~20.04.1
    5.8.0-28.30~20.04.1
    5.8.0-29.31~20.04.1
    5.8.0-31.33~20.04.1
    5.8.0-33.36~20.04.1
    5.8.0-34.37~20.04.2
    5.8.0-36.40~20.04.1
    5.8.0-38.43~20.04.1
    5.8.0-40.45~20.04.1
    5.8.0-41.46~20.04.1

    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
    USN-4727-1 | CVE-DB