USN-5267-2

    Dashboard / Vulnerabilities / USN-5267-2

    USN-5267-2

    Published: 11 Feb 2022Last Modified: 22 Apr 2026

    Summary: linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4 regression

    Details: USN-5267-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused the kernel to freeze when accessing CIFS shares in some situations. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the Bluetooth subsystem in the Linux kernel contained 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-2021-3640) Likang Luo discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, 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-2021-3752) Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739)

    References: https://ubuntu.com/security/notices/USN-5267-2, https://launchpad.net/bugs/1959665

    Affected packages

    Package

    Name: linux-aws-5.4

    Purl: pkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.4.0-1065.68~18.04.1

    Affected versions

    5.4.0-1018.18~18.04.1
    5.4.0-1020.20~18.04.2
    5.4.0-1022.22~18.04.1
    5.4.0-1024.24~18.04.1
    5.4.0-1025.25~18.04.1
    5.4.0-1028.29~18.04.1
    5.4.0-1029.30~18.04.1
    5.4.0-1030.31~18.04.1
    5.4.0-1032.33~18.04.1
    5.4.0-1034.35~18.04.1
    5.4.0-1035.37~18.04.1
    5.4.0-1037.39~18.04.1
    5.4.0-1038.40~18.04.1
    5.4.0-1039.41~18.04.1
    5.4.0-1041.43~18.04.1
    5.4.0-1043.45~18.04.1
    5.4.0-1045.47~18.04.1
    5.4.0-1047.49~18.04.1
    5.4.0-1048.50~18.04.1
    5.4.0-1049.51~18.04.1
    5.4.0-1051.53~18.04.1
    5.4.0-1054.57~18.04.1
    5.4.0-1055.58~18.04.1
    5.4.0-1056.59~18.04.1
    5.4.0-1057.60~18.04.1
    5.4.0-1058.61~18.04.3
    5.4.0-1059.62~18.04.1
    5.4.0-1060.63~18.04.1
    5.4.0-1061.64~18.04.1
    5.4.0-1063.66~18.04.1
    5.4.0-1064.67~18.04.1

    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-5267-2 | CVE-DB