FKIE_CVE-2026-31606

Vulnerability from fkie_nvd - Published: 2026-04-24 15:16 - Updated: 2026-04-24 17:51
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_hid: don't call cdev_init while cdev in use When calling unbind, then bind again, cdev_init reinitialized the cdev, even though there may still be references to it. That's the case when the /dev/hidg* device is still opened. This obviously unsafe behavior like oopes. This fixes this by using cdev_alloc to put the cdev on the heap. That way, we can simply allocate a new one in hidg_bind.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_hid: don\u0027t call cdev_init while cdev in use\n\nWhen calling unbind, then bind again, cdev_init reinitialized the cdev,\neven though there may still be references to it. That\u0027s the case when\nthe /dev/hidg* device is still opened. This obviously unsafe behavior\nlike oopes.\n\nThis fixes this by using cdev_alloc to put the cdev on the heap. That\nway, we can simply allocate a new one in hidg_bind."
    }
  ],
  "id": "CVE-2026-31606",
  "lastModified": "2026-04-24T17:51:40.810",
  "metrics": {},
  "published": "2026-04-24T15:16:39.830",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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