--- a/fsck/fsck.c	2021-11-17 10:13:55.729267514 +0100

+++ b/fsck/fsck.c	2022-05-10 12:19:36.397415101 +0200

@@ -796,6 +796,7 @@

 	if (exfat_read(exfat->blk_dev->dev_fd, boot_sect,

 		       sizeof(*boot_sect), 0) != (ssize_t)sizeof(*boot_sect)) {

 		exfat_err("failed to read Main boot sector\n");

+		free(boot_sect);

 		return -EIO;

 	}