- 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.
- Source
- security-advisories@github.com
- NVD status
- Awaiting Analysis
CVSS 4.0
- Type
- Secondary
- Base score
- 8.6
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- HIGH
- security-advisories@github.com
- CWE-122
- Hype score
- Not currently trending
[CVE-2025-48990: HIGH] NeKernal 0.0.2's `rt_copy_memory` had a 1-byte heap overflow issue fixed in commit fb7b7f658327f659c6a6da1af151cb389c2ca4ee without new checks for cyber security.#cve,CVE-2025-48990,#cybersecurity https://t.co/NlNDOVYNBe https://t.co/SA3hcuZqC9
@CveFindCom
2 Jun 2025
49 Impressions
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CVE-2025-48990 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… https://t.co/BwGOyWDcVc
@CVEnew
2 Jun 2025
516 Impressions
0 Retweets
1 Like
0 Bookmarks
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0 Quotes