> From: Namjae Jeon <linkinjeon@xxxxxxxxxx> > Sent: Thursday, July 13, 2023 9:03 PM > exfat_extract_uni_name copies characters from a given file name entry into > the 'uniname' variable. This variable is actually defined on the stack of the > exfat_readdir() function. According to the definition of the 'exfat_uni_name' > type, the file name should be limited 255 characters (+ null teminator space), > but the exfat_get_uniname_from_ext_entry() > function can write more characters because there is no check if filename > entries exceeds max filename length. This patch add the check not to copy > filename characters when exceeding max filename length. This case is not compliant with the exFAT file system specification, I think it is better to return an error and let the user fix it with fsck. The current fix may result in multiple files with the same name in a directory. Such as, there are files $(filename255) and files $(filename255)1, $(filename255)2... in a directory, but they will all be found as $(filename255).
