{"id":"CVE-2026-43066","state":"PUBLISHED","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.","publishedAt":"2026-05-05T15:23:25.984Z","updatedAt":"2026-05-11T22:17:03.438Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"0892f12cd49fde5d5db68137923db107f894f3a3","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"5a63033696e60b5d70816f1d119645ac5b0b0a03","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"19782b4c793b49a6aa4abbb307ddff3610009d21","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"f7817ad399d604e8639005d87d148b5ec626ad26","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"ec0a7500d8eace5b4f305fa0c594dd148f0e8d29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/fast_commit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.131","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/fast_commit.c"]}],"references":["https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3","https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03","https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21","https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26","https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43066.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43066","state":"PUBLISHED","datePublished":"2026-05-05T15:23:25.984Z","dateUpdated":"2026-05-11T22:17:03.438Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.981Z"},"containers":{"cna":{"title":"ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"0892f12cd49fde5d5db68137923db107f894f3a3","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"5a63033696e60b5d70816f1d119645ac5b0b0a03","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"19782b4c793b49a6aa4abbb307ddff3610009d21","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"f7817ad399d604e8639005d87d148b5ec626ad26","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"c426231e3d51916e83b6d1ab7ed8a65e83bca5b4","versionType":"git"},{"version":"8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2","status":"affected","lessThan":"ec0a7500d8eace5b4f305fa0c594dd148f0e8d29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/fast_commit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.131","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/fast_commit.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:17:03.438Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}