CVE-2022-50306

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix potential out of bound read in ext4_fc_replay_scan()

For scan loop must ensure that at least EXT4_FC_TAG_BASE_LEN space. If remain

space less than EXT4_FC_TAG_BASE_LEN which will lead to out of bound read

when mounting corrupt file system image.

ADD_RANGE/HEAD/TAIL is needed to add extra check when do journal scan, as this

three tags will read data during scan, tag length couldn't less than data length

which will read.