CVE-2023-53845 (GCVE-0-2023-53845)

Vulnerability from cvelistv5 – Published: 2025-12-09 01:30 – Updated: 2025-12-09 01:30
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfs_mdt_get_block() If the disk image that nilfs2 mounts is corrupted and a virtual block address obtained by block lookup for a metadata file is invalid, nilfs_bmap_lookup_at_level() may return the same internal return code as -ENOENT, meaning the block does not exist in the metadata file. This duplication of return codes confuses nilfs_mdt_get_block(), causing it to read and create a metadata block indefinitely. In particular, if this happens to the inode metadata file, ifile, semaphore i_rwsem can be left held, causing task hangs in lock_mount. Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block address translation failures with -ENOENT as metadata corruption instead of returning the error code.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d536f9976bb04e9c84cf80045a9355975e418f41 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8a89d36a07afe1ed4564df51fefa2bb556c85412 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8d07d9119642ba43d21f8ba64d51d01931096b20 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 25457d07c8146e57d28906c663def033dc425af6 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 34c5f17222b50c79848bb03ec8811648813e6a45 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5b29661669cb65b9750a3cf70ed3eaf947b92167 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a6a491c048882e7e424d407d32cba0b52d9ef2bf (git)
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    Linux Linux Unaffected: 4.14.315 , ≤ 4.14.* (semver)
Unaffected: 4.19.283 , ≤ 4.19.* (semver)
Unaffected: 5.4.243 , ≤ 5.4.* (semver)
Unaffected: 5.10.180 , ≤ 5.10.* (semver)
Unaffected: 5.15.111 , ≤ 5.15.* (semver)
Unaffected: 6.1.28 , ≤ 6.1.* (semver)
Unaffected: 6.2.15 , ≤ 6.2.* (semver)
Unaffected: 6.3.2 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/bmap.c"
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "unaffected",
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            },
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.243",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.180",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.28",
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              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.15",
              "versionType": "semver"
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              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.2",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "negate": false,
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      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T01:30:08.016Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2"
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        {
          "url": "https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41"
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          "url": "https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0"
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          "url": "https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45"
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          "url": "https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167"
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        {
          "url": "https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf"
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      ],
      "title": "nilfs2: fix infinite loop in nilfs_mdt_get_block()",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53845",
    "datePublished": "2025-12-09T01:30:08.016Z",
    "dateReserved": "2025-12-09T01:27:17.827Z",
    "dateUpdated": "2025-12-09T01:30:08.016Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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