The Linux kernel atmel_mxt_ts driver had a boundary check flaw in the mxt_prepare_cfg_mem function. When a configuration file specified an object size larger than the driver's known size, the loop iterated over the bytes but failed to properly skip the byte at the index equal to the object size. This off-by-one error caused a single byte overwrite in adjacent memory by calculating an incorrect byte offset and writing data there. The vulnerability was resolved by changing the boundary check condition from 'i > mxt_obj_size(object)' to 'i >= mxt_obj_size(object)', preventing the out-of-bounds write.

The vulnerability allows a single byte overwrite of adjacent memory within the kernel driver context. This could potentially lead to memory corruption, which might affect kernel stability or security depending on the overwritten data. No known exploits are reported in the wild. The impact is limited to the atmel_mxt_ts driver handling of configuration data.

A fix is available and has been applied to the Linux kernel source code to correct the boundary check condition. Users and administrators should update to the fixed Linux kernel version containing this patch. Since this is a kernel-level vulnerability, applying the official kernel update is the recommended remediation.