{"id":"CVE-2026-63953","state":"PUBLISHED","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.","publishedAt":"2026-07-19T14:55:45.509Z","updatedAt":"2026-07-19T14:55:45.509Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","status":"affected","lessThan":"24861d04f197bb651e9dfb211978271c15f75a98","versionType":"git"},{"version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","status":"affected","lessThan":"2c6f81d58741349298f51ff697d988cb42881453","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate_device.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate_device.c"]}],"references":["https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98","https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63953.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63953","state":"PUBLISHED","datePublished":"2026-07-19T14:55:45.509Z","dateUpdated":"2026-07-19T14:55:45.509Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.023Z"},"containers":{"cna":{"title":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","status":"affected","lessThan":"24861d04f197bb651e9dfb211978271c15f75a98","versionType":"git"},{"version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","status":"affected","lessThan":"2c6f81d58741349298f51ff697d988cb42881453","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate_device.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate_device.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98"},{"url":"https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T14:55:45.509Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}