| Package | Affected versions | Patched versions |
|---|---|---|
| opencv-contrib-python | < 4.1.0.25 | 4.1.0.25 |
| opencv-contrib-python-headless | < 4.1.0.25 | 4.1.0.25 |
| opencv-python | < 4.1.0.25 | 4.1.0.25 |
| opencv-python-headless | < 4.1.0.25 | 4.1.0.25 |
| opencv | < 4.1.1 | 4.1.1 |
An out-of-bounds read was discovered in OpenCV before 4.1.1 (OpenCV-Python before 4.1.0.25). Specifically, variable coarsest_scale is assumed to be greater than or equal to finest_scale within the calc()/ocl_calc() functions in dis_flow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy.
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