{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-3929",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "QEMU",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "Fixed in qemu-kvm 7.0.0-rc0"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-416 - Use After Free"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://gitlab.com/qemu-project/qemu/-/issues/556",
                "url": "https://gitlab.com/qemu-project/qemu/-/issues/556"
            },
            {
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2020298",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020298"
            },
            {
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2021-3929",
                "url": "https://access.redhat.com/security/cve/CVE-2021-3929"
            },
            {
                "refsource": "MISC",
                "name": "https://gitlab.com/qemu-project/qemu/-/issues/782",
                "url": "https://gitlab.com/qemu-project/qemu/-/issues/782"
            },
            {
                "refsource": "MISC",
                "name": "https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385",
                "url": "https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-f0a2695054",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host."
            }
        ]
    }
}