What’s Vulnerable › Vulnerabilities

CVE-2019-19624

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-06 · updated 2026-06-17
• Weakness: CWE-125

Description

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.

Affected products

• OpenCV 3.0.0: before 4.1.1 — fixed in 4.1.1
• Red Hat Enterprise Linux: 8.0

How to fix

Upgrade to a fixed version: OpenCV 3.0.0 4.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/opencv/opencv/commit/d1615ba11a93062b1429fce9f0f638d1572d3418
• https://github.com/opencv/opencv/issues/14554
• https://access.redhat.com/security/cve/cve-2019-19624
• https://github.com/opencv/opencv/commit/d1615ba11a93062b1429fce9f0f638d1572d3418
• https://github.com/opencv/opencv/issues/14554

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