CVE-2026-34549: Mutative Left Shift Byte Extraction
Extracting multi-byte integers using an in-place left shift (`val <<= 8`) can trigger Undefined Behavior (UB), especially when shifting on types where the shifted-out bits cannot be represented. Instead of mutating the integer and triggering UB under UndefinedBehaviorSanitizer, extract bytes using a calculated right shift based on the loop index (e.g., `val
C++βgreprules fetch cve-2026-34549-mutative-left-shift-byte-extraction --engine opengrepDescription
Extracting multi-byte integers using an in-place left shift (`val <<= 8`) can trigger Undefined Behavior (UB), especially when shifting on types where the shifted-out bits cannot be represented. Instead of mutating the integer and triggering UB under UndefinedBehaviorSanitizer, extract bytes using a calculated right shift based on the loop index (e.g., `val
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