{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "152a333a589560bee002e4c96761f1b560a5793c"
            },
            {
              "fixed": "4fc9b12e43a3f19a01a8fb61f7961be79de20253"
            },
            {
              "fixed": "858e4d98a86adf34584767388deb6c9b217f70c5"
            },
            {
              "fixed": "582b0bf201157632cb5474c885989a6ebda46521"
            },
            {
              "fixed": "2d8c7edcb661812249469f4a5b62e9339118846f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53015.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: unify lcn as u64 for 32-bit platforms\n\nAs sashiko reported [1], `lcn` was typed as `unsigned long` (or\n`unsigned int` sometimes), which is only 32 bits wide on 32-bit\nplatforms, which causes `(lcn \u003c\u003c lclusterbits)` to be truncated\nat 4 GiB.\n\nIn order to consolidate the logic, just use `u64` consistently\naround the codebase.\n\n[1] https://sashiko.dev/r/20260420034612.1899973-1-hsiangkao%40linux.alibaba.com",
  "id": "CVE-2026-53015",
  "modified": "2026-07-08T05:38:20.002770544Z",
  "published": "2026-06-24T16:29:25.396Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53015.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53015"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "erofs: unify lcn as u64 for 32-bit platforms"
}