{
  "cveId": "CVE-2023-53172",
  "url": "https://patchblox.com/security/cve/CVE-2023-53172",
  "summary": "CVE-2023-53172 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53172, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  fsverity: reject FS_IOC_ENABLE_VERITY on mode 3...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  fsverity: reject FS_IOC_ENABLE_VERITY on mode 3 fds  Commit 56124d6c87fd (\u0022fsverity: support enabling with tree block size \u003C PAGE_SIZE\u0022) changed FS_IOC_ENABLE_VERITY to use __kernel_read() to read the file\u0027s data, instead of direct pagecache accesses.  An unintended consequence of this is that the \u0027WARN_ON_ONCE(!(file-\u003Ef_mode \u0026 FMODE_READ))\u0027 in __kernel_read() became reachable by fuzz tests.  This happens if FS_IOC_ENABLE_VERITY is called on a fd opened with access mode 3, which means \u0022ioctl access only\u0022.  Arguably, FS_IOC_ENABLE_VERITY should work on ioctl-only fds.  But ioctl-only fds are a weird Linux extension that is rarely used and that few people even know about.  (The documentation for FS_IOC_ENABLE_VERITY even specifically says it requires O_RDONLY.)  It\u0027s probably not worthwhile to make the ioctl internally open a new fd just to handle this case.  Thus, just reject the ioctl on such fds for now.",
  "published": "2025-09-15T14:15:39Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0014,
  "epssPercentile": 0.03382,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53172",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53172",
      "released": "2025-09-15T14:15:39Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53172",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53172",
      "released": "2025-09-15T14:15:39Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}