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

Input: goodix - clamp the device-reported contact count

goodix_ts_read_input_report() copies the number of touch points reported
by the device into an on-stack buffer

	u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];

which is sized for at most GOODIX_MAX_CONTACTS (10) contacts. The only
runtime check bounds the per-interrupt count against ts->max_touch_num,
but that value is taken verbatim from a 4-bit field of the device
configuration block and is never clamped:

	ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;

The nibble can be 0..15, so a malfunctioning, malicious or counterfeit
controller (or an attacker tampering with the I2C bus) can advertise up
to 15 contacts. goodix_ts_read_input_report() then accepts a touch_num
of up to 15 and the second goodix_i2c_read() writes
ts->contact_size * (touch_num - 1) bytes past the one-contact header into
point_data - up to 30 bytes (45 with the 9-byte report format) beyond the
92-byte buffer: a stack out-of-bounds write.

Clamp max_touch_num to GOODIX_MAX_CONTACTS, the number of contacts
point_data[] is sized for, when reading it from the configuration.

https://git.kernel.org/stable/c/2a67668690129953e898923260a2dd1c7c196495

https://git.kernel.org/stable/c/3b32303460155603d25444274856013d211d5e1f

https://git.kernel.org/stable/c/46addbd13dbf4aacb71cfbca964a5e552d0f45ae

https://git.kernel.org/stable/c/4bfea9c3a0981c1c7fc5d1a1b27197b2de247902

https://git.kernel.org/stable/c/5ed62a96e06be4e94b8296b7932afee550a70e04

https://git.kernel.org/stable/c/719d1a2c83a46be6bf81af905e4f6adb3d32dc28

https://git.kernel.org/stable/c/98b2caef249183b572c04451365246f919707845

https://git.kernel.org/stable/c/e825f352ef5271255cd08cc994b0dc25648a2f38

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