{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f466c6353819326873fa48a02c6f2d7c903240d6"
            },
            {
              "fixed": "1ef251aa63972fe6c0f107f5abd139b7d0f7987a"
            },
            {
              "fixed": "18ada801899f2b13ef0ceff42427ad980a41e619"
            },
            {
              "fixed": "6045ea5ca6e3fa13f8a9fafb1c535c86e124c14d"
            },
            {
              "fixed": "e367599529dc42578545a7f85fde517b35b3cda7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.11.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31722.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_rndis: Fix net_device lifecycle with device_move\n\nThe net_device is allocated during function instance creation and\nregistered during the bind phase with the gadget device as its sysfs\nparent. When the function unbinds, the parent device is destroyed, but\nthe net_device survives, resulting in dangling sysfs symlinks:\n\n  console:/ # ls -l /sys/class/net/usb0\n  lrwxrwxrwx ... /sys/class/net/usb0 -\u003e\n  /sys/devices/platform/.../gadget.0/net/usb0\n  console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0\n  ls: .../gadget.0/net/usb0: No such file or directory\n\nUse device_move() to reparent the net_device between the gadget device\ntree and /sys/devices/virtual across bind and unbind cycles. During the\nfinal unbind, calling device_move(NULL) moves the net_device to the\nvirtual device tree before the gadget device is destroyed. On rebinding,\ndevice_move() reparents the device back under the new gadget, ensuring\nproper sysfs topology and power management ordering.\n\nTo maintain compatibility with legacy composite drivers (e.g., multi.c),\nthe borrowed_net flag is used to indicate whether the network device is\nshared and pre-registered during the legacy driver's bind phase.",
  "id": "CVE-2026-31722",
  "modified": "2026-07-08T05:39:16.118041962Z",
  "published": "2026-05-01T14:14:24.156Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18ada801899f2b13ef0ceff42427ad980a41e619"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ef251aa63972fe6c0f107f5abd139b7d0f7987a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6045ea5ca6e3fa13f8a9fafb1c535c86e124c14d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e367599529dc42578545a7f85fde517b35b3cda7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31722.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31722"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "usb: gadget: f_rndis: Fix net_device lifecycle with device_move"
}