UBUNTU-CVE-2020-10761

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    UBUNTU-CVE-2020-10761

    Published: 9 Jun 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2020-10761
    Aliases:
    USN-4467-1

    Summary:

    Details: An assertion failure issue was found in the Network Block Device(NBD) Server in all QEMU versions before QEMU 5.0.1. This flaw occurs when an nbd-client sends a spec-compliant request that is near the boundary of maximum permitted request length. A remote nbd-client could use this flaw to crash the qemu-nbd server resulting in a denial of service.

    References: https://ubuntu.com/security/CVE-2020-10761, https://www.openwall.com/lists/oss-security/2020/06/09/1, https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg02031.html, https://ubuntu.com/security/notices/USN-4467-1, https://www.cve.org/CVERecord?id=CVE-2020-10761

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.4?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.2-3ubuntu6.4

    Affected versions

    1:4.0+dfsg-0ubuntu9

    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-2020-10761 | CVE-DB