{
  "cveId": "CVE-2026-31484",
  "url": "https://patchblox.com/security/cve/CVE-2026-31484",
  "summary": "CVE-2026-31484 is fixed in linux on 1 platform by DEBIAN-CVE-2026-31484 (version 6.19.11-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  io_uring/fdinfo: fix OOB read in SQE_MIXED wrap...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  io_uring/fdinfo: fix OOB read in SQE_MIXED wrap check  __io_uring_show_fdinfo() iterates over pending SQEs and, for 128-byte SQEs on an IORING_SETUP_SQE_MIXED ring, needs to detect when the second half of the SQE would be past the end of the sq_sqes array. The current check tests (\u002B\u002Bsq_head \u0026 sq_mask) == 0, but sq_head is only incremented when a 128-byte SQE is encountered, not on every iteration. The actual array index is sq_idx = (i \u002B sq_head) \u0026 sq_mask, which can be sq_mask (the last slot) while the wrap check passes.  Fix by checking sq_idx directly. Keep the sq_head increment so the loop still skips the second half of the 128-byte SQE on the next iteration.",
  "published": "2026-04-22T14:16:45Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00117,
  "epssPercentile": 0.01673,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.11-1",
      "fix": "DEBIAN-CVE-2026-31484",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31484",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}