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fix(handler): introduce upper size limit for s_log_block_size #803

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Merged
merged 1 commit into from
Mar 4, 2024
Merged

fix(handler): introduce upper size limit for s_log_block_size #803

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6 changes: 6 additions & 0 deletions unblob/handlers/filesystem/extfs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,12 @@ def valid_header(self, header) -> bool:
"ExtFS header major version too high", rev_level=header.s_rev_level
)
return False
if header.s_log_block_size > 6:
logger.debug(
"ExtFS header s_log_block_size is too large",
s_log_block_size=header.s_log_block_size,
)
return False
return True

def calculate_chunk(self, file: File, start_offset: int) -> Optional[ValidChunk]:
Expand Down