{
  "cveId": "CVE-2025-39716",
  "url": "https://patchblox.com/security/cve/CVE-2025-39716",
  "summary": "CVE-2025-39716 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-39716, released September 5, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "parisc: Revise __get_user() to probe user read access",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  parisc: Revise __get_user() to probe user read access  Because of the way read access support is implemented, read access interruptions are only triggered at privilege levels 2 and 3. The kernel executes at privilege level 0, so __get_user() never triggers a read access interruption (code 26). Thus, it is currently possible for user code to access a read protected address via a system call.  Fix this by probing read access rights at privilege level 3 (PRIV_USER) and setting __gu_err to -EFAULT (-14) if access isn\u0027t allowed.  Note the cmpiclr instruction does a 32-bit compare because COND macro doesn\u0027t work inside asm.",
  "published": "2025-09-05T18:15:49Z",
  "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": 0.00156,
  "epssPercentile": 0.04772,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39716",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.153-1",
      "fix": "DEBIAN-CVE-2025-39716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39716",
      "released": "2025-09-05T18:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.48-1",
      "fix": "DEBIAN-CVE-2025-39716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39716",
      "released": "2025-09-05T18:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.16.5-1",
      "fix": "DEBIAN-CVE-2025-39716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39716",
      "released": "2025-09-05T18:15:49Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}