GHSA-9964-V64G-G4C3

Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2025-10-28 21:30
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

Input: synaptics - fix crash when enabling pass-through port

When enabling a pass-through port an interrupt might come before psmouse driver binds to the pass-through port. However synaptics sub-driver tries to access psmouse instance presumably associated with the pass-through port to figure out if only 1 byte of response or entire protocol packet needs to be forwarded to the pass-through port and may crash if psmouse instance has not been attached to the port yet.

Fix the crash by introducing open() and close() methods for the port and check if the port is open before trying to access psmouse instance. Because psmouse calls serio_open() only after attaching psmouse instance to serio port instance this prevents the potential crash.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-21746"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics - fix crash when enabling pass-through port\n\nWhen enabling a pass-through port an interrupt might come before psmouse\ndriver binds to the pass-through port. However synaptics sub-driver\ntries to access psmouse instance presumably associated with the\npass-through port to figure out if only 1 byte of response or entire\nprotocol packet needs to be forwarded to the pass-through port and may\ncrash if psmouse instance has not been attached to the port yet.\n\nFix the crash by introducing open() and close() methods for the port and\ncheck if the port is open before trying to access psmouse instance.\nBecause psmouse calls serio_open() only after attaching psmouse instance\nto serio port instance this prevents the potential crash.",
  "id": "GHSA-9964-v64g-g4c3",
  "modified": "2025-10-28T21:30:27Z",
  "published": "2025-02-27T03:34:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21746"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08bd5b7c9a2401faabdaa1472d45c7de0755fd7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e179d3f1ada963475395d81bfe91daef4d1a24c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87da1ea93ec9f9f0004e5b12e78789bc94e360bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2cbcd70133dc0d4d4c95ad4cd5412b935354c7c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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