CVE-2026-46097 Details
Description
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.
A use-after-free vulnerability has been identified in the Linux kernel's edt-ft5x06 input driver, specifically in the handling of debugfs teardown. This issue arises because the driver removed manual debugfs cleanup in favor of relying on the I2C core, creating a gap where debugfs files remain accessible after the driver frees a buffer containing touch data. To address this, the buffer should be freed while holding the device mutex and then set to NULL, preventing the use-after-free condition. The debugfs read function already includes a check for a NULL buffer under the same mutex, ensuring safe operation.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/9f6c5e7b747d40e1c65cbfcb975857d25154c075 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a516d43886623e3cca5fa3446bed8fc7c7982be2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f5f9e07060519e2287e99019a6de1eb3ebb65c37 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.17, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |