{"id":"CVE-2025-22000","state":"PUBLISHED","title":"mm/huge_memory: drop beyond-EOF folios with the right number of refs","description":"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 > page_size and a\ntruncate is performed, where the blocksize makes folios split to >0 order\nones, causing truncated folios not being freed.","publishedAt":"2025-04-03T07:19:03.652Z","updatedAt":"2026-05-11T21:10:42.666Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"86368616a9ce51f6b41efa251b6e066893851d67","versionType":"git"},{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e","versionType":"git"},{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"14efb4793519d73fb2902bb0ece319b886e4b4b9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.21","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.9","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]}],"references":["https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67","https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e","https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/22xxx/CVE-2025-22000.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-22000","state":"PUBLISHED","datePublished":"2025-04-03T07:19:03.652Z","dateUpdated":"2026-05-11T21:10:42.666Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.802Z"},"containers":{"cna":{"title":"mm/huge_memory: drop beyond-EOF folios with the right number of refs","descriptions":[{"lang":"en","value":"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 > page_size and a\ntruncate is performed, where the blocksize makes folios split to >0 order\nones, causing truncated folios not being freed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"86368616a9ce51f6b41efa251b6e066893851d67","versionType":"git"},{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e","versionType":"git"},{"version":"c010d47f107f609b9f4d6a103b6dfc53889049e9","status":"affected","lessThan":"14efb4793519d73fb2902bb0ece319b886e4b4b9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.21","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.9","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67"},{"url":"https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e"},{"url":"https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:10:42.666Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.13.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:10:40.636099Z","id":"CVE-2025-22000","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","type":"CWE","lang":"en","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T17:10:44.113Z"}}]}}}