{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3253aba3408aa4eb2e4e09365eede3e63ef7536b"
            },
            {
              "fixed": "d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb"
            },
            {
              "fixed": "e7636f26f77070a529c26d65afd217514ce85ce4"
            },
            {
              "fixed": "6822a2685b4da9a87efd1fce4b042678a31ff734"
            },
            {
              "fixed": "2957771379fa335103a4b539db57bb2271e12142"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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-2026-64509.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrust: block: fix GenDisk cleanup paths\n\nGenDiskBuilder::build() still has fallible work after\n__blk_mq_alloc_disk(), but its error path only recovers the\nforeign queue data. That leaks the temporary gendisk and\nrequest_queue until later teardown. If the caller moved the last\nArc\u003cTagSet\u003cT\u003e\u003e into build(), the leaked queue can retain blk-mq\nstate after the tag set is dropped.\n\nFix the pre-registration failure path by dropping the temporary\ngendisk reference with put_disk() before recovering queue_data,\nso disk_release() can tear down the owned queue.\n\nAlso pair GenDisk::drop() with put_disk() after del_gendisk().\nOnce a Rust GenDisk has been added with device_add_disk(),\ndel_gendisk() only unregisters it; the final gendisk reference\nstill has to be dropped to complete the release path.",
  "id": "CVE-2026-64509",
  "modified": "2026-07-27T03:56:34.619374926Z",
  "published": "2026-07-25T08:52:02.486Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2957771379fa335103a4b539db57bb2271e12142"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6822a2685b4da9a87efd1fce4b042678a31ff734"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7636f26f77070a529c26d65afd217514ce85ce4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64509.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64509"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "rust: block: fix GenDisk cleanup paths"
}