UBUNTU-CVE-2022-1263

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    UBUNTU-CVE-2022-1263

    Published: 8 Apr 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2022-1263
    Aliases:
    USN-5469-1

    Summary:

    Details: A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

    References: https://ubuntu.com/security/CVE-2022-1263, https://www.openwall.com/lists/oss-security/2022/04/07/1, https://www.spinics.net/lists/kvm/msg273052.html, https://ubuntu.com/security/notices/USN-5469-1, https://www.cve.org/CVERecord?id=CVE-2022-1263

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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-2022-1263 | CVE-DB