cvelist/2022/26xxx/CVE-2022-26357.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security@xen.org",
        "ID": "CVE-2022-26357",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "xen",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "?",
                                            "version_value": "consult Xen advisory XSA-399"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Xen"
                }
            ]
        }
    },
    "configuration": {
        "configuration_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "Xen versions 4.11 through 4.16 are vulnerable.  Xen versions 4.10 and\nearlier are not vulnerable.\n\nOnly x86 systems with VT-d IOMMU hardware are vulnerable.  Arm systems\nas well as x86 systems without VT-d hardware or without any IOMMUs in\nuse are not vulnerable.\n\nOnly x86 guests which have physical devices passed through to them can\nleverage the vulnerability."
                    }
                ]
            }
        }
    },
    "credit": {
        "credit_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "This issue was discovered by Jan Beulich of SUSE."
                    }
                ]
            }
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide. VT-d hardware may allow for only less than 15 bits to hold a domain ID associating a physical device with a particular domain. Therefore internally Xen domain IDs are mapped to the smaller value range. The cleaning up of the housekeeping structures has a race, allowing for VT-d domain IDs to be leaked and flushes to be bypassed."
            }
        ]
    },
    "impact": {
        "impact_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "The precise impact is system specific, but would typically be a Denial\nof Service (DoS) affecting the entire host.  Privilege escalation and\ninformation leaks cannot be ruled out."
                    }
                ]
            }
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "unknown"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://xenbits.xenproject.org/xsa/advisory-399.txt",
                "refsource": "MISC",
                "name": "https://xenbits.xenproject.org/xsa/advisory-399.txt"
            },
            {
                "refsource": "CONFIRM",
                "name": "http://xenbits.xen.org/xsa/advisory-399.html",
                "url": "http://xenbits.xen.org/xsa/advisory-399.html"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20220405 Xen Security Advisory 399 v2 (CVE-2022-26357) - race in VT-d domain ID cleanup",
                "url": "http://www.openwall.com/lists/oss-security/2022/04/05/2"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-5117",
                "url": "https://www.debian.org/security/2022/dsa-5117"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-dfbf7e2372",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-64b2c02d29",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/"
            }
        ]
    },
    "workaround": {
        "workaround_data": {
            "description": {
                "description_data": [
                    {
                        "lang": "eng",
                        "value": "Not passing through physical devices to untrusted guests will avoid\nthe vulnerability."
                    }
                ]
            }
        }
    }
}