{ "containers": { "cna": { "affected": [ { "product": "xen", "vendor": "Xen", "versions": [ { "status": "unknown", "version": "consult Xen advisory XSA-393" } ] } ], "credits": [ { "lang": "en", "value": "{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Dmytro Firsov of EPAM.'}]}}}" } ], "descriptions": [ { "lang": "en", "value": "arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes." } ], "metrics": [ { "other": { "content": { "description": { "description_data": [ { "lang": "eng", "value": "A malicious guest may be able to access Xen and other domains' memory.\nThis could cause information leaks, host or domain Denial of Service\n(DoS), and privilege escalations." } ] } }, "type": "unknown" } } ], "problemTypes": [ { "descriptions": [ { "description": "unknown", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2022-08-14T20:08:37", "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt" }, { "name": "[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2" }, { "name": "FEDORA-2022-0cc3916e08", "tags": [ "vendor-advisory", "x_refsource_FEDORA" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/" }, { "name": "DSA-5117", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2022/dsa-5117" }, { "name": "GLSA-202208-23", "tags": [ "vendor-advisory", "x_refsource_GENTOO" ], "url": "https://security.gentoo.org/glsa/202208-23" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@xen.org", "ID": "CVE-2022-23033", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "xen", "version": { "version_data": [ { "version_affected": "?", "version_value": "consult Xen advisory XSA-393" } ] } } ] }, "vendor_name": "Xen" } ] } }, "configuration": { "configuration_data": { "description": { "description_data": [ { "lang": "eng", "value": "Xen version 4.12 and newer are vulnerable. Only Arm systems are\nvulnerable.\n\nx86 systems are not vulnerable." } ] } } }, "credit": { "credit_data": { "description": { "description_data": [ { "lang": "eng", "value": "This issue was discovered by Dmytro Firsov of EPAM." } ] } } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes." } ] }, "impact": { "impact_data": { "description": { "description_data": [ { "lang": "eng", "value": "A malicious guest may be able to access Xen and other domains' memory.\nThis could cause information leaks, host or domain Denial of Service\n(DoS), and privilege escalations." } ] } } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "unknown" } ] } ] }, "references": { "reference_data": [ { "name": "https://xenbits.xenproject.org/xsa/advisory-393.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt" }, { "name": "[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2" }, { "name": "FEDORA-2022-0cc3916e08", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/" }, { "name": "DSA-5117", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2022/dsa-5117" }, { "name": "GLSA-202208-23", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202208-23" } ] }, "workaround": { "workaround_data": { "description": { "description_data": [ { "lang": "eng", "value": "There is no known mitigation." } ] } } } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T03:28:42.940Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt" }, { "name": "[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings", "tags": [ "mailing-list", "x_refsource_MLIST", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2" }, { "name": "FEDORA-2022-0cc3916e08", "tags": [ "vendor-advisory", "x_refsource_FEDORA", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/" }, { "name": "DSA-5117", "tags": [ "vendor-advisory", "x_refsource_DEBIAN", "x_transferred" ], "url": "https://www.debian.org/security/2022/dsa-5117" }, { "name": "GLSA-202208-23", "tags": [ "vendor-advisory", "x_refsource_GENTOO", "x_transferred" ], "url": "https://security.gentoo.org/glsa/202208-23" } ] } ] }, "cveMetadata": { "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-23033", "datePublished": "2022-01-25T13:36:25", "dateReserved": "2022-01-10T00:00:00", "dateUpdated": "2024-08-03T03:28:42.940Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }