UBUNTU-CVE-2016-1922

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    UBUNTU-CVE-2016-1922

    Published: 19 Jan 2016Last Modified: 4 Feb 2026
    Upstream:
    CVE-2016-1922
    Aliases:
    USN-2891-1

    Summary:

    Details: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.

    References: https://ubuntu.com/security/CVE-2016-1922, https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html, http://www.openwall.com/lists/oss-security/2016/01/16/1, https://ubuntu.com/security/notices/USN-2891-1, https://www.cve.org/CVERecord?id=CVE-2016-1922

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu1.22?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.0+dfsg-2ubuntu1.22

    Affected versions

    1.5.0+dfsg-3ubuntu5
    1.5.0+dfsg-3ubuntu6

    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