USN-6244-1

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    USN-6244-1

    Published: 25 Jul 2023Last Modified: 25 Jun 2026

    Summary: amd64-microcode vulnerability

    Details: Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information.

    References: https://ubuntu.com/security/notices/USN-6244-1, https://ubuntu.com/security/CVE-2023-20593

    Affected packages

    Package

    Name: amd64-microcode

    Purl: pkg:deb/ubuntu/amd64-microcode?arch=source&distro=esm-infra%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm1

    Affected versions

    2.20141028.1

    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-6244-1 | CVE-DB