EUVD-2025-19027
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Lifecycle Timeline
3Description
NeKernal is a free and open-source operating system stack. Prior to version 0.0.3, there are several memory safety issues that can lead to memory corruption, disk image corruption, denial of service, and potential code execution. These issues stem from unchecked memory operations, unsafe typecasting, and improper input validation. This issue has been patched in version 0.0.3.
Analysis
CVE-2025-52568 is a critical memory safety vulnerability in NeKernal (an open-source OS stack) prior to version 0.0.3 that enables memory corruption, disk image corruption, denial of service, and potential code execution through unchecked memory operations and unsafe typecasting. The vulnerability is remotely exploitable with no authentication or user interaction required (CVSS 8.8, AV:N/AC:L). All users running NeKernal versions before 0.0.3 are affected and should immediately upgrade to the patched version.
Technical Context
NeKernal is an open-source operating system stack that lacks sufficient input validation and memory safety controls at the kernel level. The vulnerability class (CWE-20: Improper Input Validation) combined with memory corruption issues indicates the OS kernel fails to validate untrusted input before performing memory operations. The root causes include: (1) unchecked memory operations allowing buffer overflows or use-after-free conditions, (2) unsafe typecasting that can lead to type confusion attacks, and (3) improper input validation in kernel-level code paths. These memory safety gaps are characteristic of systems-level code written in memory-unsafe languages (likely C) without sufficient bounds checking, static analysis, or runtime protections. The fact that disk image corruption is possible suggests the vulnerability affects filesystem or I/O subsystems, potentially exploitable through crafted network packets or malformed filesystem inputs.
Affected Products
NeKernal (< 0.0.3); NeKernal (0.0.3 and later)
Remediation
- action: Immediate Upgrade; details: Upgrade NeKernal to version 0.0.3 or later. This is the only available patch for CVE-2025-52568.; urgency: Critical - action: Source Code Review; details: Review the NeKernal v0.0.3 release notes and patch commits on the official repository (GitHub or primary distribution source) to understand specific memory safety fixes applied. - action: Network Segmentation (Temporary); details: If immediate upgrade is not feasible, isolate NeKernal systems from untrusted networks to reduce remote exploitation risk (CVSS indicates network-accessible vulnerability). - action: Input Validation Hardening; details: Implementadditionalsanitizationforuserland inputs to kernel interfaces until patched. Enable kernel-level exploit mitigations (ASLR, stack canaries, DEP/NX) if available. - action: Monitoring; details: Monitor for unusual memory access patterns, filesystem errors, or kernel panics that may indicate exploitation attempts against unpatched systems.
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External POC / Exploit Code
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