{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-31582",
  "modified": "2026-10-07T14:35:31Z",
  "upstream": [
    "CVE-2026-31582"
  ],
  "published": "2026-04-24T14:43:40Z",
  "summary": "hwmon: (powerz) Fix use-after-free on USB disconnect",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Fix use-after-free on USB disconnect\n\nAfter powerz_disconnect() frees the URB and releases the mutex, a\nsubsequent powerz_read() call can acquire the mutex and call\npowerz_read_data(), which dereferences the freed URB pointer.\n\nFix by:\n - Setting priv->urb to NULL in powerz_disconnect() so that\n   powerz_read_data() can detect the disconnected state.\n - Adding a !priv->urb check at the start of powerz_read_data()\n   to return -ENODEV on a disconnected device.\n - Moving usb_set_intfdata() before hwmon registration so the\n   disconnect handler can always find the priv pointer.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31582"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c78e1d4e48f23792adaa7c94251e22b0d9700a39"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9e1b798257f96d2e2a2639830eb71add545ce749"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7003ae4810ca83f0ddca85b768500e313c4b998c"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/61f2aa23b0ce8d7aa5071ed25a7471e246a4fdd4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/08e57f5e1a9067d5fbf33993aa7f51d60b3d13a4"
    }
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-15T02:03:26Z"
  }
}