Fix integer overflow in Gradient::populate()#592
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A signed integer overflow vulnerability existed in `src/lottie/lottiemodel.cpp` where the `colorPoints` value from untrusted JSON input (`g.p` field) could be set to values >= 0x40000000, causing `colorPoints * 4` to overflow to 0. This bypassed the bounds check and led to a heap buffer over-read during gradient rendering.
JoogabYun
approved these changes
Jun 5, 2026
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A signed integer overflow vulnerability existed in
src/lottie/lottiemodel.cppwhere thecolorPointsvalue from untrusted JSON input (g.pfield) could be set to values >= 0x40000000, causingcolorPoints * 4to overflow to 0. This bypassed the bounds check and led to a heap buffer over-read during gradient rendering.