### [CVE-2025-48990](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-48990)
![](https://img.shields.io/static/v1?label=Product&message=nekernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%200.0.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-122%3A%20Heap-based%20Buffer%20Overflow&color=brightgreen)

### Description

NeKernal is a free and open-source operating system stack. Version 0.0.2 has a 1-byte heap overflow in `rt_copy_memory`, which unconditionally wrote a null terminator at `dst[len]`. When `len` equals the size of the destination buffer (256 bytes), that extra `'\0'` write overruns the buffer by one byte. To avoid breaking existing callers or changing the public API, the patch in commit fb7b7f658327f659c6a6da1af151cb389c2ca4ee takes a minimal approach: it simply removes the overflow-causing line without adding bounds checks or altering the function signature.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds