{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46061", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.095Z", "datePublished": "2026-05-27T12:57:22.041Z", "dateUpdated": "2026-05-27T12:57:22.041Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:57:22.041Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/jbd2/revoke.c"], "versions": [{"version": "f1c5aa614b5c251f93a6a4c8c26001d5e9e53fd6", "lessThan": "dff07cc98fdf6af57a7c054dc09b2050a9d5c287", "status": "affected", "versionType": "git"}, {"version": "f76d4c28a46a9260d85e00dafc8f46d369365d33", "lessThan": "2b2fee890250ab647a601124471a334bb01a0790", "status": "affected", "versionType": "git"}, {"version": "f76d4c28a46a9260d85e00dafc8f46d369365d33", "lessThan": "bbd943d6a2d566428324b516a37f98328dfb802d", "status": "affected", "versionType": "git"}, {"version": "f76d4c28a46a9260d85e00dafc8f46d369365d33", "lessThan": "981fcc5674e67158d24d23e841523eccba19d0e7", "status": "affected", "versionType": "git"}, {"version": "1bb7a4b6b3d7dd8da6f5a9d0529d42c22a359e71", "status": "affected", "versionType": "git"}, {"version": "6.12.31", "lessThan": "6.12.86", "status": "affected", "versionType": "semver"}, {"version": "6.14.9", "lessThan": "6.15", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/jbd2/revoke.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc1", "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": "6.12.31", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.9"}]}]}], "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-46061", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:25.883", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b2fee890250ab647a601124471a334bb01a0790"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/981fcc5674e67158d24d23e841523eccba19d0e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bbd943d6a2d566428324b516a37f98328dfb802d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dff07cc98fdf6af57a7c054dc09b2050a9d5c287"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{}