{"id":"CVE-2023-53845","state":"PUBLISHED","title":"nilfs2: fix infinite loop in nilfs_mdt_get_block()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix infinite loop in nilfs_mdt_get_block()\n\nIf the disk image that nilfs2 mounts is corrupted and a virtual block\naddress obtained by block lookup for a metadata file is invalid,\nnilfs_bmap_lookup_at_level() may return the same internal return code as\n-ENOENT, meaning the block does not exist in the metadata file.\n\nThis duplication of return codes confuses nilfs_mdt_get_block(), causing\nit to read and create a metadata block indefinitely.\n\nIn particular, if this happens to the inode metadata file, ifile,\nsemaphore i_rwsem can be left held, causing task hangs in lock_mount.\n\nFix this issue by making nilfs_bmap_lookup_at_level() treat virtual block\naddress translation failures with -ENOENT as metadata corruption instead\nof returning the error code.","publishedAt":"2025-12-09T01:30:08.016Z","updatedAt":"2026-05-11T19:52:37.795Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"d536f9976bb04e9c84cf80045a9355975e418f41","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"8a89d36a07afe1ed4564df51fefa2bb556c85412","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"8d07d9119642ba43d21f8ba64d51d01931096b20","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"25457d07c8146e57d28906c663def033dc425af6","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"34c5f17222b50c79848bb03ec8811648813e6a45","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"5b29661669cb65b9750a3cf70ed3eaf947b92167","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"a6a491c048882e7e424d407d32cba0b52d9ef2bf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/bmap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"4.14.315","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.283","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.243","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.180","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.111","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.28","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.15","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3.2","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/bmap.c"]}],"references":["https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2","https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41","https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0","https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412","https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20","https://git.kernel.org/stable/c/25457d07c8146e57d28906c663def033dc425af6","https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45","https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167","https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53845.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53845","state":"PUBLISHED","datePublished":"2025-12-09T01:30:08.016Z","dateUpdated":"2026-05-11T19:52:37.795Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-09T01:27:17.827Z"},"containers":{"cna":{"title":"nilfs2: fix infinite loop in nilfs_mdt_get_block()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix infinite loop in nilfs_mdt_get_block()\n\nIf the disk image that nilfs2 mounts is corrupted and a virtual block\naddress obtained by block lookup for a metadata file is invalid,\nnilfs_bmap_lookup_at_level() may return the same internal return code as\n-ENOENT, meaning the block does not exist in the metadata file.\n\nThis duplication of return codes confuses nilfs_mdt_get_block(), causing\nit to read and create a metadata block indefinitely.\n\nIn particular, if this happens to the inode metadata file, ifile,\nsemaphore i_rwsem can be left held, causing task hangs in lock_mount.\n\nFix this issue by making nilfs_bmap_lookup_at_level() treat virtual block\naddress translation failures with -ENOENT as metadata corruption instead\nof returning the error code."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"d536f9976bb04e9c84cf80045a9355975e418f41","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"8a89d36a07afe1ed4564df51fefa2bb556c85412","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"8d07d9119642ba43d21f8ba64d51d01931096b20","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"25457d07c8146e57d28906c663def033dc425af6","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"34c5f17222b50c79848bb03ec8811648813e6a45","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"5b29661669cb65b9750a3cf70ed3eaf947b92167","versionType":"git"},{"version":"bdb265eae08db578e7cf5739be16f389d495fc75","status":"affected","lessThan":"a6a491c048882e7e424d407d32cba0b52d9ef2bf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/bmap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"4.14.315","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.283","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.243","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.180","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.111","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.28","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.15","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3.2","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/bmap.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2"},{"url":"https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41"},{"url":"https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0"},{"url":"https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412"},{"url":"https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20"},{"url":"https://git.kernel.org/stable/c/25457d07c8146e57d28906c663def033dc425af6"},{"url":"https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45"},{"url":"https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167"},{"url":"https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:52:37.795Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.14.315"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.19.283"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.4.243"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.180"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0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