{"id":"CVE-2025-22000","summary":"mm/huge_memory: drop beyond-EOF folios with the right number of refs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: drop beyond-EOF folios with the right number of refs\n\nWhen an after-split folio is large and needs to be dropped due to EOF,\nfolio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all\npage cache refs.  Otherwise, the folio will not be freed, causing memory\nleak.\n\nThis leak would happen on a filesystem with blocksize \u003e page_size and a\ntruncate is performed, where the blocksize makes folios split to \u003e0 order\nones, causing truncated folios not being freed.","modified":"2026-03-20T12:41:16.478122Z","published":"2025-04-03T07:19:03.652Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22000.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67"},{"type":"WEB","url":"https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22000.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22000"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c010d47f107f609b9f4d6a103b6dfc53889049e9"},{"fixed":"86368616a9ce51f6b41efa251b6e066893851d67"},{"fixed":"92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e"},{"fixed":"14efb4793519d73fb2902bb0ece319b886e4b4b9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22000.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}