{"api_version":"1","generated_at":"2026-05-12T18:11:35+00:00","cve":"CVE-2026-43066","urls":{"html":"https://cve.report/CVE-2026-43066","api":"https://cve.report/api/cve/CVE-2026-43066.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43066","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43066"},"summary":{"title":"ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix iloc.bh leak in ext4_fc_replay_inode() error paths\n\nDuring code review, Joseph found that ext4_fc_replay_inode() calls\next4_get_fc_inode_loc() to get the inode location, which holds a\nreference to iloc.bh that must be released via brelse().\n\nHowever, several error paths jump to the 'out' label without\nreleasing iloc.bh:\n\n - ext4_handle_dirty_metadata() failure\n - sync_dirty_buffer() failure\n - ext4_mark_inode_used() failure\n - ext4_iget() failure\n\nFix this by introducing an 'out_brelse' label placed just before\nthe existing 'out' label to ensure iloc.bh is always released.\n\nAdditionally, make ext4_fc_replay_inode() propagate errors\nproperly instead of always returning 0.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-05 16:16:15","updated_at":"2026-05-06 13:08:07"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29","name":"https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","name":"https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3","name":"https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","name":"https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","name":"https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26","name":"https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03","name":"https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21","name":"https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43066","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43066","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 0892f12cd49fde5d5db68137923db107f894f3a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 5a63033696e60b5d70816f1d119645ac5b0b0a03 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.168 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.131 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.80 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.21 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.11 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ext4/fast_commit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0892f12cd49fde5d5db68137923db107f894f3a3","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"5a63033696e60b5d70816f1d119645ac5b0b0a03","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"19782b4c793b49a6aa4abbb307ddff3610009d21","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"f7817ad399d604e8639005d87d148b5ec626ad26","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"},{"lessThan":"ec0a7500d8eace5b4f305fa0c594dd148f0e8d29","status":"affected","version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ext4/fast_commit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.10"},{"lessThan":"5.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.168","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.131","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.80","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.21","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.11","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"5.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix iloc.bh leak in ext4_fc_replay_inode() error paths\n\nDuring code review, Joseph found that ext4_fc_replay_inode() calls\next4_get_fc_inode_loc() to get the inode location, which holds a\nreference to iloc.bh that must be released via brelse().\n\nHowever, several error paths jump to the 'out' label without\nreleasing iloc.bh:\n\n - ext4_handle_dirty_metadata() failure\n - sync_dirty_buffer() failure\n - ext4_mark_inode_used() failure\n - ext4_iget() failure\n\nFix this by introducing an 'out_brelse' label placed just before\nthe existing 'out' label to ensure iloc.bh is always released.\n\nAdditionally, make ext4_fc_replay_inode() propagate errors\nproperly instead of always returning 0."}],"providerMetadata":{"dateUpdated":"2026-05-05T15:23:25.984Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3"},{"url":"https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03"},{"url":"https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25"},{"url":"https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b"},{"url":"https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21"},{"url":"https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26"},{"url":"https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4"},{"url":"https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29"}],"title":"ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43066","datePublished":"2026-05-05T15:23:25.984Z","dateReserved":"2026-05-01T14:12:55.981Z","dateUpdated":"2026-05-05T15:23:25.984Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-05 16:16:15","lastModifiedDate":"2026-05-06 13:08:07","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43066","Ordinal":"1","Title":"ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths","CVE":"CVE-2026-43066","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43066","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix iloc.bh leak in ext4_fc_replay_inode() error paths\n\nDuring code review, Joseph found that ext4_fc_replay_inode() calls\next4_get_fc_inode_loc() to get the inode location, which holds a\nreference to iloc.bh that must be released via brelse().\n\nHowever, several error paths jump to the 'out' label without\nreleasing iloc.bh:\n\n - ext4_handle_dirty_metadata() failure\n - sync_dirty_buffer() failure\n - ext4_mark_inode_used() failure\n - ext4_iget() failure\n\nFix this by introducing an 'out_brelse' label placed just before\nthe existing 'out' label to ensure iloc.bh is always released.\n\nAdditionally, make ext4_fc_replay_inode() propagate errors\nproperly instead of always returning 0.","Type":"Description","Title":"ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths"}]}}}