USN-5086-1

    Dashboard / Vulnerabilities / USN-5086-1

    USN-5086-1

    Published: 22 Sept 2021Last Modified: 25 Jun 2026

    Summary: linux, linux-hwe, linux-hwe-5.11, linux-hwe-5.4 vulnerability

    Details: Johan Almbladh discovered that the eBPF JIT implementation for IBM s390x systems in the Linux kernel miscompiled operations in some situations, allowing circumvention of the BPF verifier. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

    References: https://ubuntu.com/security/notices/USN-5086-1, https://launchpad.net/bugs/1943960

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.4.0-216.249

    Affected versions

    4.2.0-16.19
    4.2.0-17.21
    4.2.0-19.23

    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-5086-1 | CVE-DB