CVE-2018-20124

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    CVE-2018-20124

    Published: 20 Dec 2018Last Modified: 8 Jul 2026

    Summary:

    Details: hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value.

    References: http://www.securityfocus.com/bid/106290, https://usn.ubuntu.com/3923-1/, http://www.openwall.com/lists/oss-security/2018/12/18/2, https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v3.1.0
    v3.1.0-rc5
    v3.1.0-rc4
    v3.1.0-rc3
    v3.1.0-rc2
    v3.1.0-rc1
    v3.1.0-rc0

    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