The ORC team is excited to announce the release of ORC v2.0.5.

• Released: 6 May 2025
• Source code: orc-2.0.5.tar.gz
• GPG Signature signed by Dongjoon Hyun (34F0FC5C)
• Git tag: rel/release-2.0.5
• Maven Central: ORC 2.0.5
• SHA 256: 35dc3ad801f632f4…
• Fixed issues: ORC-2.0.5

The bug fixes:

• ORC-1866 Avoid zlib decompression infinite loop
• ORC-1879 [C++] Fix Heap Buffer Overflow in LZO Decompression
• ORC-1881 [C++] Populate dstBatch’s scale and precision in DecimalConvertColumnReader

The test changes:

• ORC-1745 Remove Ubuntu 20.04 Support
• ORC-1822 [C++][CI] Use cpp-linter-action for clang-tidy and clang-format
• ORC-1835 [C++] Fix cpp-linter-action to build first
• ORC-1871 [C++] Include iomanip at TestDictionaryEncoding and TestConvertColumnReader