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Summary
Adds arithmetic overflow protection in
codecs::hdr::decode_old_rle.Details
In
decode_old_rle, run-length accumulation (x_off + rl) was performed without checked arithmetic. On 32-bit architectures or crafted streams, integer wrap-around could cause unexpected behavior or panics.This patch replaces unchecked addition with
x_off.checked_add(rl), returningDecoderError::WrongScanlineLengthif an overflow condition occurs.Backward Compatibility