10.1.x: Fix prev_is_cr flag handling in chunked encoding parser#13037
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cmcfarlen merged 1 commit intoapache:10.1.xfrom Mar 30, 2026
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The prev_is_cr flag in ChunkedHandler::read_size() was being set within conditional expressions but not consistently updated, which could cause it to retain stale values across parsing iterations. Update the flag at the end of each loop iteration to ensure it accurately reflects the current character state. This improves the correctness of line break validation when parsing chunked transfer encoding with strict_chunk_parsing enabled.
bryancall
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Backport of #13036 to 10.1.x.
Summary
The
prev_is_crflag inChunkedHandler::read_size()was being set within conditional expressions but not consistently updated, which could cause it to retain stale values across parsing iterations.Update the flag at the end of each loop iteration to ensure it accurately reflects the current character state. This improves the correctness of line break validation when parsing chunked transfer encoding with
strict_chunk_parsingenabled.Changes
prev_is_crin conditionalsprev_is_crat end of loop iteration