{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98766",
  "modified": "2026-10-19T04:30:01Z",
  "upstream": [
    "CVE-2026-98766"
  ],
  "published": "2026-10-18T15:54:51Z",
  "summary": "usb: gadget: aspeed-vhub: cancel wake work on device removal",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed-vhub: cancel wake work on device removal\n\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\n\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\n\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\n\nThis issue was found by an in-house static analysis tool.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98766"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/20388c8d1d74c203fec8194c45cd31afdfab934e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-18T15:54:51Z"
  }
}