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zstd: Check FSE init values #772

Merged
merged 3 commits into from
Mar 10, 2023
Merged

zstd: Check FSE init values #772

merged 3 commits into from
Mar 10, 2023

Commits on Mar 10, 2023

  1. zstd: Check FSE init values 

    If `br.init(s.br.unread())` fails, it may decode bogus data if previous block returned without reading everything from the bit reader. This is used to feed the huff0 table for literal decoding.

Return error correctly.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56870

Add parsing of OSS reported input.
    @klauspost
    klauspost committed Mar 10, 2023
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  2. Don't use file (yet) 

    Fail on error nilness mismatch
    @klauspost
    klauspost committed Mar 10, 2023
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  3. Revert useless file change

    @klauspost
    klauspost committed Mar 10, 2023
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