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std.compress.zstandard: validate fse table value count

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dweiller 2023-01-24 13:14:06 +11:00
parent 95953e1ee6
commit 31d1cae8c6
1 changed files with 1 additions and 2 deletions
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lib/std/compress/zstandard/decompress.zig
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@ -1418,8 +1418,7 @@ fn decodeFseTable(
}
bit_reader.alignToByte();
// TODO: check there are at least 2 non-zero probabilities
if (value_count < 2) return error.MalformedFseTable;
if (accumulated_probability != total_probability) return error.MalformedFseTable;
if (value_count > expected_symbol_count) return error.MalformedFseTable;