BYPASS BUFFER FOR WORN OUT CODEWORDS

A bypass buffer stores codewords that have been identified as worn out codewords due to stuck-at-failure bit errors and/or other endurance failures. A controller of a data storage device monitors the number of worn out bits of a codeword stored by a memory device of the data storage device. If the number of worn out bits of the codeword exceeds a threshold number of worn out bits, data associated with the codeword is corrected and stored in the bypass buffer. The memory address associated with the codeword is also stored in the bypass buffer and associated with the corrected codeword.