UB at IccUtil.cpp:1088

[xsscx]

Maintainer Repro

Wed Mar 25 22:05:40 UTC 2026

Thank you Imaging-Art-Beyond-RGB-Project and SS, PN, RM, JG-S & NM from RIT for the Reports!

Git

9e0b03c (HEAD -> master, origin/master, origin/HEAD) Fix: ci-build-matrix (#714)

Step 1. wget https://github.com/xsscx/fuzz/raw/refs/heads/master/graphics/icc/ub-left-shift-not-type-icUInt32Number-IccUtil_cpp-Line1088.icc

Step 2. iccDumpProfileGui ub-left-shift-not-type-icUInt32Number-IccUtil_cpp-Line1088.icc

PoC Output

IccProfLib/IccUtil.cpp:1088:9: runtime error: left shift of 1229144900 by 8 places cannot be represented in type 'icUInt32Number' (aka 'unsigned int')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior IccProfLib/IccUtil.cpp:1088:9 

[ChrisCoxArt]

Duplicate #721, fixed with same changelist