USN-4577-1

    Dashboard / Vulnerabilities / USN-4577-1

    USN-4577-1

    Published: 14 Oct 2020Last Modified: 3 Jun 2026

    Summary: linux-hwe, linux-gke-5.0, linux-gke-5.3, linux-oem-osp1, linux-raspi2-5.3 vulnerabilities

    Details: Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-16119) Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

    References: https://ubuntu.com/security/notices/USN-4577-1, https://ubuntu.com/security/CVE-2020-16119, https://ubuntu.com/security/CVE-2020-16120

    Affected packages

    Package

    Name: linux-gke-5.0

    Purl: pkg:deb/ubuntu/linux-gke-5.0?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.0.0-1049.50

    Affected versions

    5.0.0-1011.11~18.04.1
    5.0.0-1013.13~18.04.1
    5.0.0-1015.15~18.04.1
    5.0.0-1017.17~18.04.1
    5.0.0-1020.20~18.04.1
    5.0.0-1022.22~18.04.3
    5.0.0-1023.23~18.04.2
    5.0.0-1025.26~18.04.1
    5.0.0-1026.27~18.04.2
    5.0.0-1027.28~18.04.1
    5.0.0-1029.30~18.04.1
    5.0.0-1030.31
    5.0.0-1032.33
    5.0.0-1033.34
    5.0.0-1035.36
    5.0.0-1037.38
    5.0.0-1042.43
    5.0.0-1043.44
    5.0.0-1045.46
    5.0.0-1046.47
    5.0.0-1047.48

    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