USN-5211-1

    Dashboard / Vulnerabilities / USN-5211-1

    USN-5211-1

    Published: 6 Jan 2022Last Modified: 29 Jun 2026

    Summary: linux, linux-aws, linux-kvm, linux-lts-xenial vulnerability

    Details: Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages.

    References: https://ubuntu.com/security/notices/USN-5211-1, https://ubuntu.com/security/CVE-2021-4002

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-189.240

    Affected versions

    3.11.0-12.19

    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-5211-1 | CVE-DB