CVE-2020-29040

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    CVE-2020-29040

    Published: 24 Nov 2020Last Modified: 15 Mar 2026

    Summary:

    Details: An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

    References: http://www.openwall.com/lists/oss-security/2021/01/19/4, http://xenbits.xen.org/xsa/advisory-355.html, https://xenbits.xen.org/xsa/advisory-355.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2020-29040 | CVE-DB