{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4"
            },
            {
              "fixed": "50eeb8e8a4f389efc91b93cff14a683e714ec194"
            },
            {
              "fixed": "7a5214dae906d9f58e07bc4995e8181ee74439f4"
            },
            {
              "fixed": "d026f71df141c9b064ff32a78af5391a31ef75c2"
            },
            {
              "fixed": "b52476a83d9e12df00765359d728a875b128bef1"
            },
            {
              "fixed": "54fa390aae393eb130f307a85562e3001cc39a52"
            },
            {
              "fixed": "67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "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-2026-64346.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: udc: Fix use-after-free in gadget_match_driver\n\nThe udc structure acts as the management structure for the gadget,\nbut their lifecycles are decoupled. A race condition exists where\nusb_del_gadget() frees the udc memory (e.g., via mode-switch work)\nwhile gadget_match_driver() concurrently accesses the freed udc memory\n(e.g., via configfs), causing a Use-After-Free (UAF) that triggers a\nNULL pointer dereference when the freed memory is zeroed:\n\n[39430.908615][ T1171] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[39430.911397][ T1171] pc : __pi_strcmp+0x20/0x140\n[39430.911441][ T1171] lr : gadget_match_driver+0x34/0x60\n...\n[39430.911890][ T1171]  usb_gadget_register_driver_owner+0x50/0xf8\n[39430.911910][ T1171]  gadget_dev_desc_UDC_store+0xf4/0x140\n[39430.931308][ T1171]  configfs_write_iter+0xec/0x134\n\n[39430.957058][ T1171] Workqueue: events_freezable __dwc3_set_mode\n[39430.957287][ T1171]  dwc3_gadget_exit+0x34/0x8c\n[39430.957304][ T1171]  __dwc3_set_mode+0xc0/0x664\n\nFix this by ensuring the udc structure remains allocated until the\ngadget is released. To achieve this, introduce a new\nusb_gadget_release() routine to the core. When the gadget is added,\nusb_add_gadget() stores the gadget's release routine in the udc\nstructure and takes a reference to the udc. When the gadget is\nreleased, usb_gadget_release() drops the reference to the udc and\nthen calls the gadget's release routine.",
  "id": "CVE-2026-64346",
  "modified": "2026-07-28T03:55:49.481801634Z",
  "published": "2026-07-25T08:50:07.680Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50eeb8e8a4f389efc91b93cff14a683e714ec194"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54fa390aae393eb130f307a85562e3001cc39a52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a5214dae906d9f58e07bc4995e8181ee74439f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b52476a83d9e12df00765359d728a875b128bef1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d026f71df141c9b064ff32a78af5391a31ef75c2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64346.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64346"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "usb: gadget: udc: Fix use-after-free in gadget_match_driver"
}