CVE-2026-40572 - NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)

CVE-2026-40572 - NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)

https://cvefeed.io/rssfeed/latest.atom / Sat, 04/18/2026 - 07:02
CVE ID :CVE-2026-40572
Published : April 18, 2026, 1:16 a.m. | 2 hours, 55 minutes ago
Description :NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. In versions prior to 0.24, Syscall 15 (MemoryMapRange) allows Ring 3 user-mode processes to map arbitrary virtual address ranges into their address space without validating against forbidden regions, including critical kernel structures such as the IDT, GDT, TSS, and page tables. A local attacker can exploit this to modify kernel interrupt handlers, resulting in privilege escalation from user mode to kernel context. This issue has been fixed in version 0.24.
Severity: 9.0 | CRITICAL
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