CVE-2026-46097
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, a vulnerability was found in the edt-ft5x06 touchscreen driver. During debugfs teardown, a use-after-free condition could occur on the raw_buffer because manual cleanup was removed in favor of automatic I2C core handling. The debugfs read function could access the buffer after it was freed.
Risk Assessment
A local attacker with access to debugfs could trigger a read of freed kernel memory, potentially leading to information disclosure or system instability (kernel crash).
Recommendation
Apply the kernel patch that protects the freeing of raw_buffer with a device mutex and sets the pointer to NULL, preventing the use-after-free. Update to the latest stable kernel version to remediate this vulnerability.
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Original NVD description (English source)
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.