UBUNTU-CVE-2022-42309

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    UBUNTU-CVE-2022-42309

    Published: 1 Nov 2022Last Modified: 17 Oct 2026
    Upstream:
    CVE-2022-42309

    Summary:

    Details: Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain.

    References: https://ubuntu.com/security/CVE-2022-42309, https://xenbits.xen.org/xsa/advisory-414.html, https://xenbits.xenproject.org/xsa/advisory-414.txt, http://xenbits.xen.org/xsa/advisory-414.html, http://www.openwall.com/lists/oss-security/2022/11/01/4, https://www.cve.org/CVERecord?id=CVE-2022-42309

    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-2022-42309 | CVE-DB