{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "87213b0d847cd300285b5545598e0548baeb5208"
            },
            {
              "fixed": "ce63eda3e6d36e2c253febee1c8421ecbd1a680e"
            },
            {
              "fixed": "ed9f54cc1e335096733aed03c2a46de3d58922ed"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45975.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd\n\nstruct ublksrv_ctrl_cmd is part of the io_uring_sqe, which may lie in\nuserspace-mapped memory. It's racy to access its fields with normal\nloads, as userspace may write to them concurrently. Use READ_ONCE() to\ncopy the ublksrv_ctrl_cmd from the io_uring_sqe to the stack. Use the\nlocal copy in place of the one in the io_uring_sqe.",
  "id": "CVE-2026-45975",
  "modified": "2026-07-08T05:37:39.281427782Z",
  "published": "2026-05-27T12:18:33.939Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45975.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45975"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd"
}