{
  "cveId": "CVE-2026-90176",
  "url": "https://patchblox.com/security/cve/CVE-2026-90176",
  "summary": "CVE-2026-90176 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-90176, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: Do not skip lock checks for single-byte r...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: Do not skip lock checks for single-byte ranges  check_lock_range() uses inclusive ranges. Its callers pass the end offset as start \u002B length - 1, so start == end represents a valid single-byte range rather than an empty range.  The start == end shortcut therefore skips mandatory byte-range lock checks for one-byte reads, writes, copychunk operations and one-byte truncate ranges. A conflicting lock covering that byte is not checked and the operation is allowed to proceed.  Remove the shortcut. The truncate size == inode-\u003Ei_size case is already handled by only calling check_lock_range() when the new size differs from the current file size.",
  "published": "2026-09-17T17:17:11Z",
  "severity": "high",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00501,
  "epssPercentile": 0.43148,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-90176",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90176",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-90176",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90176",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-90176",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90176",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-90176",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90176",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "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"
  }
}