Integer Overflow and OOPS Vulnerability in ft5x46 Touchscreen Driver on Xiaomi MIX 3

CVE-2018-20787 · HIGH Severity

AV:N/AC:M/AU:N/C:N/I:N/A:C

The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-11-26 has an integer overflow and OOPS because of missing checks of the size argument in tpdbg_write in drivers/input/touchscreen/ft5x46/ft5x46_ts.c. This is exploitable for a device crash via a syscall by a crafted application on a rooted device.

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