USN-4678-1

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    USN-4678-1

    Published: 6 Jan 2021Last Modified: 10 Feb 2026

    Summary: linux, linux-hwe-5.8, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi vulnerabilities

    Details: It was discovered that the AMD Running Average Power Limit (RAPL) driver in the Linux kernel did not properly restrict access to power data. A local attacker could possibly use this to expose sensitive information. (CVE-2020-12912) Jann Horn discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations. A local attacker could use this to expose sensitive information or possibly escalate privileges. (CVE-2020-29534)

    References: https://ubuntu.com/security/notices/USN-4678-1, https://ubuntu.com/security/CVE-2020-12912, https://ubuntu.com/security/CVE-2020-29534

    Affected packages

    Package

    Name: linux-hwe-5.8

    Purl: pkg:deb/ubuntu/[email protected]~20.04.2?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.8.0-34.37~20.04.2

    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

    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-4678-1 | CVE-DB