CVE-2018-5269 Reachable Assertion in OpenCV.

What is CVE-2018-5269?

CVE-2018-5269 is a medium-severity vulnerability in Debian Debian Linux, published on 8 Jan 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In OpenCV 3.3.1, an assertion failure happens in cv::RBaseStream::setPos in modules/imgcodecs/src/bitstrm.cpp because of an incorrect integer cast.

Weakness: CWE-617

Which versions are affected by CVE-2018-5269?

6 open source packages ship an affected version, including opencv-contrib-python and opencv-python. It affects 2 products.

Products include Debian Debian Linux, Opencv Opencv.

How do I fix CVE-2018-5269?

Upgrade opencv-contrib-python to 3.4.1.15 or later.

Is CVE-2018-5269 being exploited?

There is no known exploitation of CVE-2018-5269 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-5269, GHSA-89rj-5ggj-3p9p, PYSEC-2026-2812, PYSEC-2026-703, UBUNTU-CVE-2018-5269.