{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "18bcbcfe9ca2308ebffb40068b51803da9315d97"
            },
            {
              "fixed": "11d069f85851997b4ea0adf242ed9672dc749b8f"
            },
            {
              "fixed": "b4222c05066b252b451f9c8c4730b5b60824ea66"
            },
            {
              "fixed": "6462de75d2e370c7e74dcfb7b4ae79eb5a6a55ee"
            },
            {
              "fixed": "0b57e5ddbd89df3bc367463de3d2ca66f99a1a5e"
            },
            {
              "fixed": "ab2bfd7bec4f134b377ec42f513e90c35db94160"
            },
            {
              "fixed": "766738ecf2b819e54d38763c8d1c8ae6cff14b39"
            },
            {
              "fixed": "9ba62966461a8e3cc593b62c56ec62eb2d80436d"
            },
            {
              "fixed": "62fc8eb1b1481051f7bab4aa93d79809053dd09f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.25"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "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-2026-64340.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: legousbtower: fix use-after-free on disconnect race\n\nmutex_unlock() may access the mutex structure after releasing the lock\nand therefore cannot be used to manage lifetime of objects directly\n(unlike spinlocks and refcounts). [1][2]\n\nUse a kref to release the driver data to avoid use-after-free in\nmutex_unlock() when release() races with disconnect().\n\n[1] a51749ab34d9 (\"locking/mutex: Document that mutex_unlock() is\n                   non-atomic\")\n[2] 2b9d9e0a9ba0 (\"locking/mutex: Clarify that mutex_unlock(), and most\n                   other sleeping locks, can still use the lock object\n                   after it's unlocked\")",
  "id": "CVE-2026-64340",
  "modified": "2026-08-18T03:30:58.380190263Z",
  "published": "2026-07-25T08:50:03.896Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b57e5ddbd89df3bc367463de3d2ca66f99a1a5e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11d069f85851997b4ea0adf242ed9672dc749b8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62fc8eb1b1481051f7bab4aa93d79809053dd09f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6462de75d2e370c7e74dcfb7b4ae79eb5a6a55ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/766738ecf2b819e54d38763c8d1c8ae6cff14b39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ba62966461a8e3cc593b62c56ec62eb2d80436d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab2bfd7bec4f134b377ec42f513e90c35db94160"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4222c05066b252b451f9c8c4730b5b60824ea66"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64340.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64340"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "USB: legousbtower: fix use-after-free on disconnect race"
}