Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/nekernel-org/nekernel/commit/fb7b7f658327f659c6a6da1af151cb38
- https://github.com/nekernel-org/nekernel/security/advisories/GHSA-jvvh-fp57-2p32
FAQ
What is CVE-2025-48990?
CVE-2025-48990 is a documented vulnerability. 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 ...
How severe is CVE-2025-48990?
CVSS scoring is not yet available for CVE-2025-48990. Check NVD for updates.
Is there a patch for CVE-2025-48990?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.