{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53845",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53845"
  ],
  "published": "2025-12-09T01:31:24Z",
  "summary": "nilfs2: fix infinite loop in nilfs_mdt_get_block()",
  "details": "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": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.28"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53845"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/25457d07c8146e57d28906c663def033dc425af6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}