{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3568a956932621cafadafc8b75fcf6dc06555105"
            },
            {
              "fixed": "623719227b114d73a2cee45f1b343ced63ce09ec"
            },
            {
              "fixed": "9d81ba6d49a7457784f0b6a71046818b86ec7e44"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39888.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: Block access to folio overlimit\n\nsyz reported a slab-out-of-bounds Write in fuse_dev_do_write.\n\nWhen the number of bytes to be retrieved is truncated to the upper limit\nby fc-\u003emax_pages and there is an offset, the oob is triggered.\n\nAdd a loop termination condition to prevent overruns.",
  "id": "CVE-2025-39888",
  "modified": "2026-04-01T23:10:04.449394943Z",
  "published": "2025-09-23T06:00:54.156Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/623719227b114d73a2cee45f1b343ced63ce09ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d81ba6d49a7457784f0b6a71046818b86ec7e44"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39888.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39888"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "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": "fuse: Block access to folio overlimit"
}