{"id":"CVE-2022-33747","state":"PUBLISHED","title":"Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in us","description":"Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.","publishedAt":"2022-10-11T00:00:00.000Z","updatedAt":"2024-08-03T08:09:22.675Z","severity":null,"assigner":"XEN","products":["Xen xen"],"affected":[{"vendor":"Xen","product":"xen","versions":[{"version":"consult Xen advisory XSA-409","status":"unknown"}]}],"references":["https://xenbits.xenproject.org/xsa/advisory-409.txt","http://xenbits.xen.org/xsa/advisory-409.html","http://www.openwall.com/lists/oss-security/2022/10/11/5","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/","https://www.debian.org/security/2022/dsa-5272","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/","https://security.gentoo.org/glsa/202402-07"],"weaknesses":[],"ingestedAt":"2026-10-29T19:50:12.412Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/33xxx/CVE-2022-33747.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-33747","state":"PUBLISHED","datePublished":"2022-10-11T00:00:00.000Z","dateUpdated":"2024-08-03T08:09:22.675Z","assignerShortName":"XEN","assignerOrgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateReserved":"2022-06-15T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings."}],"affected":[{"vendor":"Xen","product":"xen","versions":[{"version":"consult Xen advisory XSA-409","status":"unknown"}]}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-409.txt"},{"url":"http://xenbits.xen.org/xsa/advisory-409.html"},{"url":"http://www.openwall.com/lists/oss-security/2022/10/11/5","name":"[oss-security] 20221011 Xen Security Advisory 409 v3 (CVE-2022-33747) - Arm: unbounded memory consumption for 2nd-level page tables","tags":["mailing-list"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/","name":"FEDORA-2022-5b594b82ac","tags":["vendor-advisory"]},{"url":"https://www.debian.org/security/2022/dsa-5272","name":"DSA-5272","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/","name":"FEDORA-2022-d80cc73088","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/","name":"FEDORA-2022-99af00f60e","tags":["vendor-advisory"]},{"url":"https://security.gentoo.org/glsa/202402-07","name":"GLSA-202402-07","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"unknown","content":{"description":{"description_data":[{"lang":"eng","value":"A malicious guest could cause a Denial of Service, preventing any system\noperation requiring further allocation of Xen memory, including creating\nnew guests.  NB however that memory exhaustion by itself shouldn’t cause\neither Xen or properly-written guests to crash."}]}}}}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"unknown"}]}],"providerMetadata":{"shortName":"XEN","orgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateUpdated":"2024-02-04T08:07:03.069Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-409.txt","tags":["x_transferred"]},{"url":"http://xenbits.xen.org/xsa/advisory-409.html","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2022/10/11/5","name":"[oss-security] 20221011 Xen Security Advisory 409 v3 (CVE-2022-33747) - Arm: unbounded memory consumption for 2nd-level page tables","tags":["mailing-list","x_transferred"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/","name":"FEDORA-2022-5b594b82ac","tags":["vendor-advisory","x_transferred"]},{"url":"https://www.debian.org/security/2022/dsa-5272","name":"DSA-5272","tags":["vendor-advisory","x_transferred"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/","name":"FEDORA-2022-d80cc73088","tags":["vendor-advisory","x_transferred"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/","name":"FEDORA-2022-99af00f60e","tags":["vendor-advisory","x_transferred"]},{"url":"https://security.gentoo.org/glsa/202402-07","name":"GLSA-202402-07","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T08:09:22.675Z"}}]}}}