{
    "CVE_data_meta": {
        "ASSIGNER": "security@xen.org",
        "ID": "CVE-2022-42329",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "?",
                                            "version_value": "consult Xen advisory XSA-424"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Linux"
                }
            ]
        }
    },
    "configuration": {
        "configuration_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "All systems using the Linux kernel based network backend xen-netback\nare vulnerable."
                    }
                ]
            }
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329)."
            }
        ]
    },
    "impact": {
        "impact_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "A malicious guest could cause Denial of Service (DoS) of the host via\nthe paravirtualized network interface."
                    }
                ]
            }
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "unknown"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://xenbits.xenproject.org/xsa/advisory-424.txt",
                "refsource": "MISC",
                "name": "https://xenbits.xenproject.org/xsa/advisory-424.txt"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20221208 Re: Xen Security Advisory 424 v1 (CVE-2022-42328,CVE-2022-42329) - Guests can trigger deadlock in Linux netback driver",
                "url": "http://www.openwall.com/lists/oss-security/2022/12/08/3"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20221208 Re: Xen Security Advisory 424 v1 (CVE-2022-42328,CVE-2022-42329) - Guests can trigger deadlock in Linux netback driver",
                "url": "http://www.openwall.com/lists/oss-security/2022/12/08/2"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20221209 Re: Xen Security Advisory 424 v1 (CVE-2022-42328,CVE-2022-42329) - Guests can trigger deadlock in Linux netback driver",
                "url": "http://www.openwall.com/lists/oss-security/2022/12/09/2"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20221222 [SECURITY] [DLA 3244-1] linux-5.10 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20221223 [SECURITY] [DLA 3245-1] linux security update",
                "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html"
            }
        ]
    },
    "workaround": {
        "workaround_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "Using another PV network backend (e.g. the qemu based \"qnic\" backend)\nwill mitigate the problem.\n\nUsing a dedicated network driver domain per guest will mitigate the\nproblem."
                    }
                ]
            }
        }
    }
}