GH-50707: [C++][Gandiva] Fix out-of-bounds read in mask functions - #50733
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KHARSHAVARDHAN-eng wants to merge 1 commit into
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GH-50707: [C++][Gandiva] Fix out-of-bounds read in mask functions#50733KHARSHAVARDHAN-eng wants to merge 1 commit into
KHARSHAVARDHAN-eng wants to merge 1 commit into
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What changes are included?
Fix out-of-bounds reads in Gandiva UTF-8 masking functions by passing the remaining buffer length to
utf8proc_iterate()instead of the original string length after advancing the input pointer.Also adds missing error handling for invalid UTF-8 sequences and regression tests covering truncated multi-byte UTF-8 inputs.
Why are these changes needed?
The previous implementation advanced the input pointer while continuing to pass the original buffer length to
utf8proc_iterate(). This could allow reads beyond the remaining valid buffer.Tests