{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23097","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.964Z","datePublished":"2026-02-04T16:08:19.815Z","dateUpdated":"2026-05-11T21:59:56.711Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:59:56.711Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmigrate: correct lock ordering for hugetlb file folios\n\nSyzbot has found a deadlock (analyzed by Lance Yang):\n\n1) Task (5749): Holds folio_lock, then tries to acquire i_mmap_rwsem(read lock).\n2) Task (5754): Holds i_mmap_rwsem(write lock), then tries to acquire\nfolio_lock.\n\nmigrate_pages()\n  -> migrate_hugetlbs()\n    -> unmap_and_move_huge_page()     <- Takes folio_lock!\n      -> remove_migration_ptes()\n        -> __rmap_walk_file()\n          -> i_mmap_lock_read()       <- Waits for i_mmap_rwsem(read lock)!\n\nhugetlbfs_fallocate()\n  -> hugetlbfs_punch_hole()           <- Takes i_mmap_rwsem(write lock)!\n    -> hugetlbfs_zero_partial_page()\n     -> filemap_lock_hugetlb_folio()\n      -> filemap_lock_folio()\n        -> __filemap_get_folio        <- Waits for folio_lock!\n\nThe migration path is the one taking locks in the wrong order according to\nthe documentation at the top of mm/rmap.c.  So expand the scope of the\nexisting i_mmap_lock to cover the calls to remove_migration_ptes() too.\n\nThis is (mostly) how it used to be after commit c0d0381ade79.  That was\nremoved by 336bf30eb765 for both file & anon hugetlb pages when it should\nonly have been removed for anon hugetlb pages."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate.c"],"versions":[{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"e7396d23f9d5739f56cf9ab430c3a169f5508394","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"ad97b9a55246eb940a26ac977f80892a395cabf9","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"5edb9854f8df5428b40990a1c7d60507da5bd330","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"526394af4e8ade89cacd1a9ce2b97712712fcc34","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"b75070823b89009f5123fd0e05a8e0c3d39937c1","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"1b68efce6dd483d22f50d0d3800c4cfda14b1305","status":"affected","versionType":"git"},{"version":"336bf30eb76580b579dc711ded5d599d905c0217","lessThan":"b7880cb166ab62c2409046b2347261abf701530e","status":"affected","versionType":"git"},{"version":"ef792d6ce0db6a56e56743b1de1716a982c3b851","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/migrate.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.10.249","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.199","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.162","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.122","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.68","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.8","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.249"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.199"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.68"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e7396d23f9d5739f56cf9ab430c3a169f5508394"},{"url":"https://git.kernel.org/stable/c/ad97b9a55246eb940a26ac977f80892a395cabf9"},{"url":"https://git.kernel.org/stable/c/5edb9854f8df5428b40990a1c7d60507da5bd330"},{"url":"https://git.kernel.org/stable/c/526394af4e8ade89cacd1a9ce2b97712712fcc34"},{"url":"https://git.kernel.org/stable/c/b75070823b89009f5123fd0e05a8e0c3d39937c1"},{"url":"https://git.kernel.org/stable/c/1b68efce6dd483d22f50d0d3800c4cfda14b1305"},{"url":"https://git.kernel.org/stable/c/b7880cb166ab62c2409046b2347261abf701530e"}],"title":"migrate: correct lock ordering for hugetlb file folios","x_generator":{"engine":"bippy-1.2.0"}}}}