An out-of-bounds read was discovered in OpenCV before 4.1.1.

Summary

An out-of-bounds read was discovered in OpenCV before 4.1.1. 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.

Timeline

1. Dec 6, 2019, 2:26 PM UTCCVE published
2. Aug 5, 2024, 2:25 AM UTCRecord last updated

Affected versions

• n/a n/a

  Version range not reported

• opencv-python-headlessPyPI

  fixed in 4.1.0.25

• opencv-pythonPyPI

  fixed in 4.1.0.25

• opencv-contrib-pythonPyPI

  fixed in 4.1.0.25

• opencv-contrib-python-headlessPyPI

  fixed in 4.1.0.25

• opencv-pythonPyPI

  fixed in 4.1.0.25

• opencv-contrib-python-headlessPyPI

  fixed in 4.1.0.25

References 2