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{"bugzilla": {"description": "Qemu: PRDT overflow from guest to host", "id": "1204919", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1204919"}, "csaw": false, "cvss": {"cvss_base_score": "4.6", "cvss_scoring_vector": "AV:A/AC:H/Au:N/C:N/I:N/A:C", "status": "draft"}, "cwe": "CWE-835", "details": ["The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality in QEMU 1.0 through 2.1.3 have multiple interpretations of a function's return value, which allows guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions.", "A denial of service flaw was found in the way QEMU handled malformed Physical Region Descriptor Table (PRDT) data sent to the host's IDE and/or AHCI controller emulation. A privileged guest user could use this flaw to crash the system."], "name": "CVE-2014-9718", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:openstack:5::el6", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6"}, {"cpe": "cpe:/a:redhat:openstack:5::el7", "fix_state": "Affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7"}, {"cpe": "cpe:/a:redhat:openstack:6", "fix_state": "Affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 6 (Juno)"}, {"cpe": "cpe:/a:redhat:openstack:4", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat OpenStack Platform 4"}], "public_date": "2014-10-31T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2014-9718\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-9718"], "statement": "This issue did not affect the versions of the kvm package as shipped with Red Hat Enterprise Linux 5 and the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6.\nThis issue affects the version of the qemu-kvm package as shipped with Red Hat Enterprise Linux 7, a future update may address this flaw.", "threat_severity": "Moderate"}