UBUNTU-CVE-2022-42335

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    UBUNTU-CVE-2022-42335

    Published: 25 Apr 2023Last Modified: 20 May 2026
    Upstream:
    CVE-2022-42335

    Summary:

    Details: x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

    References: https://ubuntu.com/security/CVE-2022-42335, https://www.openwall.com/lists/oss-security/2023/04/25/1, https://xenbits.xen.org/xsa/advisory-430.html, https://xenbits.xenproject.org/xsa/advisory-430.txt, http://xenbits.xen.org/xsa/advisory-430.html, http://www.openwall.com/lists/oss-security/2023/04/25/1, https://www.cve.org/CVERecord?id=CVE-2022-42335

    Affected packages

    Package

    Name: xen

    Purl: pkg:deb/ubuntu/xen?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.5.1-0ubuntu1
    4.5.1-0ubuntu2

    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
    UBUNTU-CVE-2022-42335 | CVE-DB