bitlk: harden parsing of metadata entries
For broken metadata BITLK format parsing can cause crash or out of memory on several places.
Add better size checks to avoid parsing such a metadata.
Fixes OSS-fuzz bug 54548,54553,54559.
For broken metadata BITLK format parsing can cause crash or out of memory on several places.
Add better size checks to avoid parsing such a metadata.
Fixes OSS-fuzz bug 54548,54553,54559.