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LibCompress: Error on truncated uncompressed DEFLATE blocks

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This commit is contained in:
Tim Schumacher 2023-04-12 16:03:36 +02:00 • committed by Tim Flynn
parent f56b897622
commit 4098335600
2 changed files with 15 additions and 0 deletions
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3
Userland/Libraries/LibCompress/Deflate.cpp
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@ -238,6 +238,9 @@ ErrorOr<bool> DeflateDecompressor::UncompressedBlock::try_read_more()
if (m_bytes_remaining == 0)
return false;
if (m_decompressor.m_input_stream->is_eof())
return Error::from_string_literal("Input data ends in the middle of an uncompressed DEFLATE block");
Array<u8, 4096> temporary_buffer;
auto readable_bytes = temporary_buffer.span().trim(min(m_bytes_remaining, m_decompressor.m_output_buffer.empty_space()));
auto read_bytes = TRY(m_decompressor.m_input_stream->read_some(readable_bytes));