Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dcf8b6 Conversion API src/mat_pixel.cpp ncnn::yuv420sp2rgb integer overflow

Summaryinfo

A vulnerability has been found in Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dcf8b6 and classified as critical. This affects the function ncnn::yuv420sp2rgb of the file src/mat_pixel.cpp of the component Conversion API. This manipulation causes integer overflow. This vulnerability appears as CVE-2026-112074. The attack may be initiated remotely. In addition, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dcf8b6 and classified as critical. Affected by this vulnerability is the function ncnn::yuv420sp2rgb of the file src/mat_pixel.cpp of the component Conversion API. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-112074. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Tencent

Name

• ncnn

Version

• 44b02dabdcf97499281a4692ebd65bad73dcf8b6

Website

• Product: https://github.com/Tencent/ncnn/

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Accepted

• Submit #1009498: Tencent ncnn master 3b7bdba Integer Overflow (by JerryGW)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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