FKIE_CVE-2026-46097

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: edt-ft5x06 - fix use-after-free in debugfs teardown The commit 68743c500c6e ("Input: edt-ft5x06 - use per-client debugfs directory") removed the manual debugfs teardown, relying on the I2C core to handle it. However, this creates a window where debugfs files are still accessible after edt_ft5x06_ts_teardown_debugfs() frees tsdata->raw_buffer. To prevent a use-after-free, protect the freeing of raw_buffer with the device mutex and set raw_buffer to NULL. The debugfs read function already checks if raw_buffer is NULL under the same mutex, so this safely avoids the use-after-free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f6c5e7b747d40e1c65cbfcb975857d25154c075
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a516d43886623e3cca5fa3446bed8fc7c7982be2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5f9e07060519e2287e99019a6de1eb3ebb65c37
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: edt-ft5x06 - fix use-after-free in debugfs teardown\n\nThe commit 68743c500c6e (\"Input: edt-ft5x06 - use per-client debugfs\ndirectory\") removed the manual debugfs teardown, relying on the I2C core\nto handle it. However, this creates a window where debugfs files are\nstill accessible after edt_ft5x06_ts_teardown_debugfs() frees\ntsdata-\u003eraw_buffer.\n\nTo prevent a use-after-free, protect the freeing of raw_buffer with the\ndevice mutex and set raw_buffer to NULL. The debugfs read function\nalready checks if raw_buffer is NULL under the same mutex, so this\nsafely avoids the use-after-free."
    }
  ],
  "id": "CVE-2026-46097",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:31.333",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9f6c5e7b747d40e1c65cbfcb975857d25154c075"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a516d43886623e3cca5fa3446bed8fc7c7982be2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f5f9e07060519e2287e99019a6de1eb3ebb65c37"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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