9.2.x: Fix prev_is_cr flag handling in chunked encoding parser#13038
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ezelkow1 merged 1 commit intoapache:9.2.xfrom Mar 30, 2026
Merged
9.2.x: Fix prev_is_cr flag handling in chunked encoding parser#13038ezelkow1 merged 1 commit intoapache:9.2.xfrom
ezelkow1 merged 1 commit intoapache:9.2.xfrom
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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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ezelkow1
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Mar 30, 2026
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Backport of #13036 to 9.2.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