CVE-2026-46097 (GCVE-0-2026-46097)
Vulnerability from cvelistv5
Published
2026-05-27 12:58
Modified
2026-06-14 17:54
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
Impacted products
Vendor Product Version
Linux Linux Version: 68743c500c6eafcd0b16dc6067fea5bca0795eef
Version: 68743c500c6eafcd0b16dc6067fea5bca0795eef
Version: 68743c500c6eafcd0b16dc6067fea5bca0795eef
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/touchscreen/edt-ft5x06.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a516d43886623e3cca5fa3446bed8fc7c7982be2",
              "status": "affected",
              "version": "68743c500c6eafcd0b16dc6067fea5bca0795eef",
              "versionType": "git"
            },
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              "lessThan": "9f6c5e7b747d40e1c65cbfcb975857d25154c075",
              "status": "affected",
              "version": "68743c500c6eafcd0b16dc6067fea5bca0795eef",
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            }
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          "product": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
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                  "vulnerable": true
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                  "versionEndExcluding": "7.0.4",
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                },
                {
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                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:54:10.915Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a516d43886623e3cca5fa3446bed8fc7c7982be2"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f6c5e7b747d40e1c65cbfcb975857d25154c075"
        },
        {
          "url": "https://git.kernel.org/stable/c/f5f9e07060519e2287e99019a6de1eb3ebb65c37"
        }
      ],
      "title": "Input: edt-ft5x06 - fix use-after-free in debugfs teardown",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46097",
    "datePublished": "2026-05-27T12:58:59.100Z",
    "dateReserved": "2026-05-13T15:03:33.097Z",
    "dateUpdated": "2026-06-14T17:54:10.915Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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