{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4fea593e625cd50d4d11be227007849b12f17bfb"
            },
            {
              "fixed": "0b466cf1b96e191b06b496c4de79da15315c3a9a"
            },
            {
              "fixed": "0a7f33010c0e4cd92937e088a54350381fd0fbf2"
            },
            {
              "fixed": "1c57a69be962d459c5e705f5cb4355b841b3461c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64258.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref\n\nIf a copy into the userspace ring buffer fails, a request will be\nterminated and fuse_uring_req_end() will set ent-\u003efuse_req to NULL but\nit will leave the entry on ent_w_req_queue in FRRS_FUSE_REQ state. This\ncan lead to a NULL deref if the request expiration logic scans\nent_w_req_queue in the window before the entry is moved off it.\n\nFix this by taking the entry off ent_w_req_queue and changing its state\nfrom FRRS_FUSE_REQ to FRRS_INVALID before terminating the request.",
  "id": "CVE-2026-64258",
  "modified": "2026-08-18T03:30:56.318964747Z",
  "published": "2026-07-25T08:49:10.093Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a7f33010c0e4cd92937e088a54350381fd0fbf2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b466cf1b96e191b06b496c4de79da15315c3a9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c57a69be962d459c5e705f5cb4355b841b3461c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64258.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64258"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref"
}