CVE-2022-33742

{"containers": {"cna": {"affected": [{"product": "Linux", "vendor": "Linux", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-403"}]}, {"product": "xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-403"}]}], "credits": [{"lang": "en", "value": "{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'The issue related to not zeroing memory areas used for shared communications\\nwas discovered by Roger Pau Monn\u00e9 of Citrix.\\n\\nThe issue related to leaking contiguous data in granted pages was disclosed\\npublicly.'}]}}}"}], "descriptions": [{"lang": "en", "value": "Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742)."}], "metrics": [{"other": {"content": {"description": {"description_data": [{"lang": "eng", "value": "An untrusted backend can access data not intended to be shared. If such\nmappings are made with write permissions the backend could also cause\nmalfunctions and/or crashes to consumers of contiguous data in the shared\npages."}]}}, "type": "unknown"}}], "problemTypes": [{"descriptions": [{"description": "unknown", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-10-02T18:06:05.000Z", "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://xenbits.xen.org/xsa/advisory-403.html"}, {"name": "[oss-security] 20220705 Xen Security Advisory 403 v3 (CVE-2022-26365,CVE-2022-33740,CVE-2022-33741,CVE-2022-33742) - Linux disk/nic frontends data leaks", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"}, {"name": "FEDORA-2022-c4ec706488", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"}, {"name": "FEDORA-2022-2c9f8224f8", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"}, {"name": "DSA-5191", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2022/dsa-5191"}, {"name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@xen.org", "ID": "CVE-2022-33742", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Linux", "version": {"version_data": [{"version_affected": "?", "version_value": "consult Xen advisory XSA-403"}]}}]}, "vendor_name": "Linux"}, {"product": {"product_data": [{"product_name": "xen", "version": {"version_data": [{"version_affected": "?", "version_value": "consult Xen advisory XSA-403"}]}}]}, "vendor_name": "Xen"}]}}, "configuration": {"configuration_data": {"description": {"description_data": [{"lang": "eng", "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used."}]}}}, "credit": {"credit_data": {"description": {"description_data": [{"lang": "eng", "value": "The issue related to not zeroing memory areas used for shared communications\nwas discovered by Roger Pau Monn\u00e9 of Citrix.\n\nThe issue related to leaking contiguous data in granted pages was disclosed\npublicly."}]}}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742)."}]}, "impact": {"impact_data": {"description": {"description_data": [{"lang": "eng", "value": "An untrusted backend can access data not intended to be shared. If such\nmappings are made with write permissions the backend could also cause\nmalfunctions and/or crashes to consumers of contiguous data in the shared\npages."}]}}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "unknown"}]}]}, "references": {"reference_data": [{"name": "https://xenbits.xenproject.org/xsa/advisory-403.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"}, {"name": "http://xenbits.xen.org/xsa/advisory-403.html", "refsource": "CONFIRM", "url": "http://xenbits.xen.org/xsa/advisory-403.html"}, {"name": "[oss-security] 20220705 Xen Security Advisory 403 v3 (CVE-2022-26365,CVE-2022-33740,CVE-2022-33741,CVE-2022-33742) - Linux disk/nic frontends data leaks", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"}, {"name": "FEDORA-2022-c4ec706488", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"}, {"name": "FEDORA-2022-2c9f8224f8", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"}, {"name": "DSA-5191", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2022/dsa-5191"}, {"name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"}]}, "workaround": {"workaround_data": {"description": {"description_data": [{"lang": "eng", "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious."}]}}}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T08:09:22.683Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://xenbits.xen.org/xsa/advisory-403.html"}, {"name": "[oss-security] 20220705 Xen Security Advisory 403 v3 (CVE-2022-26365,CVE-2022-33740,CVE-2022-33741,CVE-2022-33742) - Linux disk/nic frontends data leaks", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"}, {"name": "FEDORA-2022-c4ec706488", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"}, {"name": "FEDORA-2022-2c9f8224f8", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"}, {"name": "DSA-5191", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2022/dsa-5191"}, {"name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"}]}]}, "cveMetadata": {"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-33742", "datePublished": "2022-07-05T12:50:39.000Z", "dateReserved": "2022-06-15T00:00:00.000Z", "dateUpdated": "2024-08-03T08:09:22.683Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "Linux", "vendor": "Linux", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-403"}]}, {"product": "xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-403"}]}], "source": "security@xen.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1B0D16E0-9971-4ED5-9A73-7C11CA6B9DAD", "versionEndExcluding": "4.9.322", "versionStartIncluding": "2.6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "740AB5E4-1AE7-4504-8FB9-15AB1E979E0B", "versionEndExcluding": "4.14.287", "versionStartIncluding": "4.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C4E1197F-C6A4-4E44-892E-AFEE759BA4BC", "versionEndExcluding": "4.19.251", "versionStartIncluding": "4.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2916E5D4-7959-4461-B252-43297126D433", "versionEndExcluding": "5.4.204", "versionStartIncluding": "5.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C49FD9FA-5422-414C-9CB1-F03B8A10210E", "versionEndExcluding": "5.10.129", "versionStartIncluding": "5.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "64D5DDAF-7707-498F-A2FA-ABD464B9E5BC", "versionEndExcluding": "5.15.53", "versionStartIncluding": "5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "826FC9E6-B4EC-4087-9F85-857B80073192", "versionEndExcluding": "5.18.10", "versionStartIncluding": "5.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "4F76C298-81DC-43E4-8FC9-DC005A2116EF", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*", "matchCriteriaId": "0AB349B2-3F78-4197-882B-90ADB3BF645A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*", "matchCriteriaId": "6AC88830-A9BC-4607-B572-A4B502FC9FD0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*", "matchCriteriaId": "476CB3A5-D022-4F13-AAEF-CB6A5785516A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.12:rc6:*:*:*:*:*:*", "matchCriteriaId": "8CFD5CDD-1709-44C7-82BD-BAFDC46990D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*", "matchCriteriaId": "BF8547FC-C849-4F1B-804B-A93AE2F04A92", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*", "matchCriteriaId": "F3068028-F453-4A1C-B80F-3F5609ACEF60", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*", "matchCriteriaId": "2E9C0DB0-D349-489F-A3D6-B77214E93A8A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*", "matchCriteriaId": "1A0DE3B7-0FFB-45AA-9BD6-19870CA7C6FD", "vulnerable": true}, {"criteria": "cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*", "matchCriteriaId": "BFA1950D-1D9F-4401-AA86-CF3028EFD286", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742)."}, {"lang": "es", "value": "Unas fuga de datos de frontends de disco/NIC de Linux Este registro de informaci\u00f3n de CNA se relaciona con m\u00faltiples CVE; el texto explica qu\u00e9 aspectos/vulnerabilidades corresponden a qu\u00e9 CVE.] Las interfaces de dispositivos Linux Block y Network PV no ponen a cero las regiones de memoria antes de compartirlas con el backend (CVE-2022-26365, CVE-2022-33740). Adem\u00e1s, la granularidad de la tabla de concesi\u00f3n no permite compartir menos de una p\u00e1gina de 4K, lo que hace que los datos no relacionados que residen en la misma p\u00e1gina de 4K que los datos compartidos con un backend sean accesibles por dicho backend (CVE-2022-33741, CVE-2022- 33742)"}], "id": "CVE-2022-33742", "lastModified": "2026-06-17T04:49:21.427", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-07-05T13:15:08.570", "references": [{"source": "security@xen.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"}, {"source": "security@xen.org", "tags": ["Patch", "Vendor Advisory"], "url": "http://xenbits.xen.org/xsa/advisory-403.html"}, {"source": "security@xen.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"}, {"source": "security@xen.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"}, {"source": "security@xen.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"}, {"source": "security@xen.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5191"}, {"source": "security@xen.org", "tags": ["Vendor Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://xenbits.xen.org/xsa/advisory-403.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5191"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}