{"api_version":"1","generated_at":"2026-07-23T20:01:56+00:00","cve":"CVE-2026-63953","urls":{"html":"https://cve.report/CVE-2026-63953","api":"https://cve.report/api/cve/CVE-2026-63953.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63953","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63953"},"summary":{"title":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page\n\nWhen migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due\nto a PMD check failure, the pgtable allocated earlier via\npte_alloc_one() is never freed, causing a memory leak.\n\nAdded free_abort label to release the pgtable in error path.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:14","updated_at":"2026-07-19 16:17:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453","name":"https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98","name":"https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63953","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63953","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c 24861d04f197bb651e9dfb211978271c15f75a98 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c 2c6f81d58741349298f51ff697d988cb42881453 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.12 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63953","cve":"CVE-2026-63953","epss":"0.001890000","percentile":"0.087850000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/migrate_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"24861d04f197bb651e9dfb211978271c15f75a98","status":"affected","version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","versionType":"git"},{"lessThan":"2c6f81d58741349298f51ff697d988cb42881453","status":"affected","version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["mm/migrate_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page\n\nWhen migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due\nto a PMD check failure, the pgtable allocated earlier via\npte_alloc_one() is never freed, causing a memory leak.\n\nAdded free_abort label to release the pgtable in error path."}],"providerMetadata":{"dateUpdated":"2026-07-19T14:55:45.509Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98"},{"url":"https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453"}],"title":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63953","datePublished":"2026-07-19T14:55:45.509Z","dateReserved":"2026-07-19T07:54:57.023Z","dateUpdated":"2026-07-19T14:55:45.509Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:14","lastModifiedDate":"2026-07-19 16:17:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63953","Ordinal":"1","Title":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_p","CVE":"CVE-2026-63953","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63953","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page\n\nWhen migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due\nto a PMD check failure, the pgtable allocated earlier via\npte_alloc_one() is never freed, causing a memory leak.\n\nAdded free_abort label to release the pgtable in error path.","Type":"Description","Title":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_p"}]}}}