{
  "cveId": "CVE-2026-52992",
  "url": "https://patchblox.com/security/cve/CVE-2026-52992",
  "summary": "CVE-2026-52992 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-52992, released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "fs/adfs: validate nzones in adfs_validate_bblk()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  fs/adfs: validate nzones in adfs_validate_bblk()  Reject ADFS disc records with a zero zone count during boot block validation, before the disc record is used.  When nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...) which returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to dm[-1], causing an out-of-bounds write before the allocated buffer.  adfs_validate_dr0() already rejects nzones != 1 for old-format images.  Add the equivalent check to adfs_validate_bblk() for new-format images so that a crafted image with nzones == 0 is rejected at probe time.  Found by syzkaller.",
  "published": "2026-06-24T17:17:10Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00176,
  "epssPercentile": 0.0712,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52992",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.176-1",
      "fix": "DEBIAN-CVE-2026-52992",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52992",
      "released": "2026-06-25T17:23:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.94-1",
      "fix": "DEBIAN-CVE-2026-52992",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52992",
      "released": "2026-06-25T17:23:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.10-1",
      "fix": "DEBIAN-CVE-2026-52992",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52992",
      "released": "2026-06-25T17:23:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}