md/raid5: validate payload size before accessing journal metadata

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[SECURITY] Fedora 34 Update: testdisk-7.1-7.fc34

Tool to check and undelete partition. Works with FAT12, FAT16, FAT32, NTFS, ext2, ext3, ext4, btrfs, BeFS, CramFS, HFS, JFS, Linux Raid, Linux Swap, LVM, LVM2, NSS, ReiserFS, UFS, XFS. PhotoRec is a signature based file recovery utility. It handles more than 440 file formats including JPG,...