CVE-2025-48990 (GCVE-0-2025-48990)
Vulnerability from cvelistv5 – Published: 2025-06-02 11:21 – Updated: 2025-06-02 16:39
VLAI
EPSS
VEX
Title
NeKernel has Heap Overflow in `rt_copy_memory`
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-02 16:30 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nekernel-org/nekernel/security… | x_refsource_CONFIRM |
| https://github.com/nekernel-org/nekernel/commit/f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nekernel-org | nekernel |
Affected:
= 0.0.2
|
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