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AFF4: a truncated deflate member or chunk is an error #7

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Merged
deadp merged 1 commit into from
Oct 21, 2026
Merged

AFF4: a truncated deflate member or chunk is an error #7

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4 changes: 4 additions & 0 deletions engine/aff4.py
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Original file line number Diff line number Diff line change
Expand Up @@ -436,6 +436,8 @@ def read_member(self, name, max_bytes=None):
out = d.decompress(raw, e.size + 1)
if len(out) > e.size:
raise zlib.error("member inflates past its declared size")
if not d.eof:
raise zlib.error("member is truncated")
return out
except zlib.error:
raise Aff4Error(_t("aff4.member_decompress_failed") % name)
Expand Down Expand Up @@ -524,6 +526,8 @@ def _read_chunk(self, chunk_id):
out = d.decompress(raw, self.chunk_size + 1)
if len(out) > self.chunk_size:
raise zlib.error("chunk inflates past the chunk size")
if not d.eof:
raise zlib.error("chunk is truncated")
return out
except zlib.error:
self.findings.append(
Expand Down
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