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NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. Prior to version 0.25-beta.1, the `Nova` interpreter runs in Ring 0 with unrestricted kernel-memory access. Loading a malicious `.nv` script through the shell permits a local user to execute code with kernel privileges without security checks. The advisory identifies VM initialization in `zig/nova/vm.zig` as the affected component; script execution is not isolated in a restricted Ring 3 privilege domain. This issue is fixed in version 0.25-beta.1.

• https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rq9v-wxp3-ffrr x_refsource_CONFIRM
• https://github.com/MinecAnton209/NovumOS/commit/ca3e7a6b4bcdcac23413d39ecf863b94e6a3a207 x_refsource_MISC
• https://github.com/MinecAnton209/NovumOS/tree/v0.25-beta.1 x_refsource_MISC