{"api_version":"1","generated_at":"2026-06-03T09:12:15+00:00","cve":"CVE-2026-46061","urls":{"html":"https://cve.report/CVE-2026-46061","api":"https://cve.report/api/cve/CVE-2026-46061.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46061","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46061"},"summary":{"title":"jbd2: fix deadlock in jbd2_journal_cancel_revoke()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix deadlock in jbd2_journal_cancel_revoke()\n\nCommit f76d4c28a46a (\"fs/jbd2: use sleeping version of\n__find_get_block()\") changed jbd2_journal_cancel_revoke() to use\n__find_get_block_nonatomic() which holds the folio lock instead of\ni_private_lock. This breaks the lock ordering (folio -> buffer) and\ncauses an ABBA deadlock when the filesystem blocksize < pagesize:\n\n     T1                                T2\next4_mkdir()\n ext4_init_new_dir()\n  ext4_append()\n   ext4_getblk()\n    lock_buffer()    <- A\n                                   sync_blockdev()\n                                    blkdev_writepages()\n                                     writeback_iter()\n                                      writeback_get_folio()\n                                       folio_lock()   <- B\n     ext4_journal_get_create_access()\n      jbd2_journal_cancel_revoke()\n       __find_get_block_nonatomic()\n        folio_lock()  <- B\n                                     block_write_full_folio()\n                                      lock_buffer()   <- A\n\nThis can occasionally cause generic/013 to hang.\n\nFix by only calling __find_get_block_nonatomic() when the passed\nbuffer_head doesn't belong to the bdev, which is the only case that we\nneed to look up its bdev alias. Otherwise, the lookup is redundant since\nthe found buffer_head is equal to the one we passed in.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:25","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2b2fee890250ab647a601124471a334bb01a0790","name":"https://git.kernel.org/stable/c/2b2fee890250ab647a601124471a334bb01a0790","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/981fcc5674e67158d24d23e841523eccba19d0e7","name":"https://git.kernel.org/stable/c/981fcc5674e67158d24d23e841523eccba19d0e7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bbd943d6a2d566428324b516a37f98328dfb802d","name":"https://git.kernel.org/stable/c/bbd943d6a2d566428324b516a37f98328dfb802d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dff07cc98fdf6af57a7c054dc09b2050a9d5c287","name":"https://git.kernel.org/stable/c/dff07cc98fdf6af57a7c054dc09b2050a9d5c287","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46061","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46061","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f1c5aa614b5c251f93a6a4c8c26001d5e9e53fd6 dff07cc98fdf6af57a7c054dc09b2050a9d5c287 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f76d4c28a46a9260d85e00dafc8f46d369365d33 2b2fee890250ab647a601124471a334bb01a0790 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f76d4c28a46a9260d85e00dafc8f46d369365d33 bbd943d6a2d566428324b516a37f98328dfb802d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f76d4c28a46a9260d85e00dafc8f46d369365d33 981fcc5674e67158d24d23e841523eccba19d0e7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1bb7a4b6b3d7dd8da6f5a9d0529d42c22a359e71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.31 6.12.86 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14.9 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46061","cve":"CVE-2026-46061","epss":"0.000180000","percentile":"0.048460000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/jbd2/revoke.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dff07cc98fdf6af57a7c054dc09b2050a9d5c287","status":"affected","version":"f1c5aa614b5c251f93a6a4c8c26001d5e9e53fd6","versionType":"git"},{"lessThan":"2b2fee890250ab647a601124471a334bb01a0790","status":"affected","version":"f76d4c28a46a9260d85e00dafc8f46d369365d33","versionType":"git"},{"lessThan":"bbd943d6a2d566428324b516a37f98328dfb802d","status":"affected","version":"f76d4c28a46a9260d85e00dafc8f46d369365d33","versionType":"git"},{"lessThan":"981fcc5674e67158d24d23e841523eccba19d0e7","status":"affected","version":"f76d4c28a46a9260d85e00dafc8f46d369365d33","versionType":"git"},{"status":"affected","version":"1bb7a4b6b3d7dd8da6f5a9d0529d42c22a359e71","versionType":"git"},{"lessThan":"6.12.86","status":"affected","version":"6.12.31","versionType":"semver"},{"lessThan":"6.15","status":"affected","version":"6.14.9","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/jbd2/revoke.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"6.12.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix deadlock in jbd2_journal_cancel_revoke()\n\nCommit f76d4c28a46a (\"fs/jbd2: use sleeping version of\n__find_get_block()\") changed jbd2_journal_cancel_revoke() to use\n__find_get_block_nonatomic() which holds the folio lock instead of\ni_private_lock. This breaks the lock ordering (folio -> buffer) and\ncauses an ABBA deadlock when the filesystem blocksize < pagesize:\n\n     T1                                T2\next4_mkdir()\n ext4_init_new_dir()\n  ext4_append()\n   ext4_getblk()\n    lock_buffer()    <- A\n                                   sync_blockdev()\n                                    blkdev_writepages()\n                                     writeback_iter()\n                                      writeback_get_folio()\n                                       folio_lock()   <- B\n     ext4_journal_get_create_access()\n      jbd2_journal_cancel_revoke()\n       __find_get_block_nonatomic()\n        folio_lock()  <- B\n                                     block_write_full_folio()\n                                      lock_buffer()   <- A\n\nThis can occasionally cause generic/013 to hang.\n\nFix by only calling __find_get_block_nonatomic() when the passed\nbuffer_head doesn't belong to the bdev, which is the only case that we\nneed to look up its bdev alias. Otherwise, the lookup is redundant since\nthe found buffer_head is equal to the one we passed in."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:57:22.041Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/dff07cc98fdf6af57a7c054dc09b2050a9d5c287"},{"url":"https://git.kernel.org/stable/c/2b2fee890250ab647a601124471a334bb01a0790"},{"url":"https://git.kernel.org/stable/c/bbd943d6a2d566428324b516a37f98328dfb802d"},{"url":"https://git.kernel.org/stable/c/981fcc5674e67158d24d23e841523eccba19d0e7"}],"title":"jbd2: fix deadlock in jbd2_journal_cancel_revoke()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46061","datePublished":"2026-05-27T12:57:22.041Z","dateReserved":"2026-05-13T15:03:33.095Z","dateUpdated":"2026-05-27T12:57:22.041Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:25","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46061","Ordinal":"1","Title":"jbd2: fix deadlock in jbd2_journal_cancel_revoke()","CVE":"CVE-2026-46061","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46061","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix deadlock in jbd2_journal_cancel_revoke()\n\nCommit f76d4c28a46a (\"fs/jbd2: use sleeping version of\n__find_get_block()\") changed jbd2_journal_cancel_revoke() to use\n__find_get_block_nonatomic() which holds the folio lock instead of\ni_private_lock. This breaks the lock ordering (folio -> buffer) and\ncauses an ABBA deadlock when the filesystem blocksize < pagesize:\n\n     T1                                T2\next4_mkdir()\n ext4_init_new_dir()\n  ext4_append()\n   ext4_getblk()\n    lock_buffer()    <- A\n                                   sync_blockdev()\n                                    blkdev_writepages()\n                                     writeback_iter()\n                                      writeback_get_folio()\n                                       folio_lock()   <- B\n     ext4_journal_get_create_access()\n      jbd2_journal_cancel_revoke()\n       __find_get_block_nonatomic()\n        folio_lock()  <- B\n                                     block_write_full_folio()\n                                      lock_buffer()   <- A\n\nThis can occasionally cause generic/013 to hang.\n\nFix by only calling __find_get_block_nonatomic() when the passed\nbuffer_head doesn't belong to the bdev, which is the only case that we\nneed to look up its bdev alias. Otherwise, the lookup is redundant since\nthe found buffer_head is equal to the one we passed in.","Type":"Description","Title":"jbd2: fix deadlock in jbd2_journal_cancel_revoke()"}]}}}