UBUNTU-CVE-2022-42319

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    UBUNTU-CVE-2022-42319

    Published: 1 Nov 2022Last Modified: 17 Oct 2026
    Upstream:
    CVE-2022-42319

    Summary:

    Details: Xenstore: Guests can cause Xenstore to not free temporary memory When working on a request of a guest, xenstored might need to allocate quite large amounts of memory temporarily. This memory is freed only after the request has been finished completely. A request is regarded to be finished only after the guest has read the response message of the request from the ring page. Thus a guest not reading the response can cause xenstored to not free the temporary memory. This can result in memory shortages causing Denial of Service (DoS) of xenstored.

    References: https://ubuntu.com/security/CVE-2022-42319, https://xenbits.xen.org/xsa/advisory-416.html, https://xenbits.xenproject.org/xsa/advisory-416.txt, http://xenbits.xen.org/xsa/advisory-416.html, http://www.openwall.com/lists/oss-security/2022/11/01/6, https://www.cve.org/CVERecord?id=CVE-2022-42319

    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-2022-42319 | CVE-DB