{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7b6d3255e7f8c6df2d21504c47808e3ce84649ac"
            },
            {
              "fixed": "f033530105aa73d82c121d54b57f358e4865d2f4"
            },
            {
              "fixed": "4b3c5965fca99f62d31c963294bd5b23cc488e97"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.1.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90009.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: bsg: Fix TOCTOU in io_uring passthrough command setup\n\nscsi_bsg_uring_cmd() reads bsg_uring_cmd from the shared mmap'd SQE.\nUserspace can change a field after we check it and before we use it.\nrequest_len is the sharp case: it can grow past sizeof(scmd-\u003ecmnd) after\nthe bound check and overflow scmd-\u003ecmnd in copy_from_user().\n\nREAD_ONCE() the SQE fields we check or use into locals before use.",
  "id": "CVE-2026-90009",
  "modified": "2026-09-18T03:30:14.103310381Z",
  "published": "2026-09-16T10:33:17.446Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b3c5965fca99f62d31c963294bd5b23cc488e97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f033530105aa73d82c121d54b57f358e4865d2f4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90009.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90009"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "scsi: bsg: Fix TOCTOU in io_uring passthrough command setup"
}