UBUNTU-CVE-2022-0897

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    UBUNTU-CVE-2022-0897

    Published: 25 Mar 2022Last Modified: 15 Aug 2026
    Upstream:
    CVE-2022-0897

    Summary:

    Details: A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

    References: https://ubuntu.com/security/CVE-2022-0897, https://ubuntu.com/security/notices/USN-5399-1, https://ubuntu.com/security/notices/USN-6126-1, https://www.cve.org/CVERecord?id=CVE-2022-0897

    Affected packages

    Package

    Name: libvirt

    Purl: pkg:deb/ubuntu/libvirt?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.0.0-1ubuntu8.21

    Affected versions

    3.6.0-1ubuntu5
    3.6.0-1ubuntu6

    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-2022-0897 | CVE-DB