decode_stream_within now bounds the output of each stage of a /Filter
chain, not only FlateDecode. RunLength, LZW, ASCIIHex and ASCII85 stop
when their output would pass the limit, a full LZW table takes no more
entries, PNG predictor rows are sized with checked arithmetic and only
allocated when a whole row fits in the data, and CCITT checks
/Rows x row bytes against the limit before allocating.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
inflate used the unbounded miniz_oxide functions, and File::parse decodes
every object stream eagerly. Use the limit variants (1 GiB per stream, 256 MiB
for object streams, a quarter of that on 32-bit targets) and bound the
truncated-stream salvage buffer too.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
