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dir/gen3: check for magic when parsing CPD #196

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Merged
orangecms merged 1 commit into from
Nov 30, 2025
Merged

dir/gen3: check for magic when parsing CPD #196

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8 changes: 8 additions & 0 deletions src/dir/gen3.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,14 @@ impl CodePartitionDirectory {
let Ok((header, _)) = CPDHeader::read_from_prefix(data) else {
return Err("could not parse CPD header".to_string());
};

let m = header.magic;
if m != CPD_MAGIC_BYTES {
return Err(format!(
"missing CPD magic; got {m:02x?}, wanted {CPD_MAGIC_BYTES:02x?}"
));
}

let name = header.name();
let header_size = if header.version_or_checksum == 0x00140102 {
HEADER_SIZE + 4
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