CVE-2026-40572 — AI Deep Analysis Summary

🚨 **Essence**: NovumOS syscall #15 allows Ring 3 users to map **any** virtual address range, including protected kernel areas.…

🛡️ **CWE-269**: Improper Privilege Management. The flaw is a missing validation check in **Syscall 15**. It fails to verify if the target memory range is **prohibited** or belongs to the kernel.

👥 **Affected**: **NovumOS** (32-bit Protected Mode OS) developed by **MinecAnton209**. 📅 **Version**: All versions **prior to 0.24** are vulnerable.

💀 **Attacker Actions**: A local user (no auth needed) can map kernel memory. They can **modify interrupt handlers** to gain **Ring 0** access. Result: Complete system compromise & data integrity loss.

🔓 **Threshold**: **LOW**. ⚙️ **Config**: Requires **Local** access (AV:L). 🔑 **Auth**: **None** required (PR:N). 🖱️ **UI**: **None** required (UI:N). Easy for anyone with shell access.

🧪 **Public Exp?**: **No** public PoC/Exploit listed in the data (pocs: []). However, the logic is simple enough that wild exploitation is theoretically feasible for skilled local attackers.

🔍 **Self-Check**: 1. Check OS version: Is it **< 0.24**? 2. Verify if **Syscall 15** is exposed to Ring 3. 3. Scan for unauthorized memory mapping attempts in system logs.

✅ **Fixed?**: **YES**. Official fix released in **NovumOS v0.24**. 📝 **Patch**: See GitHub Advisory [GHSA-rg7m-6vh7-f4v2](https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2).

🚧 **No Patch Workaround**: 1. **Restrict Local Access**: Limit who can log in. 2. **Disable Syscall 15**: If possible, block user-space access to this specific syscall via kernel config. 3.…

⚡ **Urgency**: **HIGH**. 📊 **CVSS**: 7.8 (High). 🎯 **Priority**: Patch immediately to **v0.24**. Since it allows **Local Privilege Escalation** without auth, any local user is a threat.