NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)
概要
NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
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.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web github.com