{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab"
            },
            {
              "fixed": "33aafd2418a59c96c0389d47ea09026661fa9ec6"
            },
            {
              "fixed": "1f0ed0f57f0fc87e46fe19a05435c214dc464be2"
            },
            {
              "fixed": "6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc"
            },
            {
              "fixed": "a11372a8b1ceaa5e950a84b3b5fbf8228f25e277"
            },
            {
              "fixed": "1586bd2d2fb436a26df20a70e78b000d34a7d159"
            },
            {
              "fixed": "a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de"
            },
            {
              "fixed": "60d82592ac8b5637fbed871381eb0a16df0a492e"
            },
            {
              "fixed": "dd9d3e16c2d5fa166e13dce07413be51f42c8f5d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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/2026/52xxx/CVE-2026-52992.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/adfs: validate nzones in adfs_validate_bblk()\n\nReject ADFS disc records with a zero zone count during boot block\nvalidation, before the disc record is used.\n\nWhen nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...)\nwhich returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to\ndm[-1], causing an out-of-bounds write before the allocated buffer.\n\nadfs_validate_dr0() already rejects nzones != 1 for old-format\nimages.  Add the equivalent check to adfs_validate_bblk() for\nnew-format images so that a crafted image with nzones == 0 is\nrejected at probe time.\n\nFound by syzkaller.",
  "id": "CVE-2026-52992",
  "modified": "2026-07-08T05:37:58.770028700Z",
  "published": "2026-06-24T16:29:05.592Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52992.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52992"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "fs/adfs: validate nzones in adfs_validate_bblk()"
}