CVE-2026-29646 - OpenXiangShan NEMU RVH Hypervisor Extension CSR Write Privilege Violation

CVE-2026-29646 - OpenXiangShan NEMU RVH Hypervisor Extension CSR Write Privilege Violation

https://cvefeed.io/rssfeed/latest.atom / Tue, 04/21/2026 - 01:54
CVE ID :CVE-2026-29646
Published : April 20, 2026, 9:16 p.m. | 56 minutes ago
Description :In OpenXiangShan NEMU prior to 55295c4, when running with RVH (Hypervisor extension) enabled, a VS-mode guest write to the supervisor interrupt-enable CSR (sie) may be handled incorrectly and can influence machine-level interrupt enable state (mie). This breaks privilege/virtualization isolation and can lead to denial of service or privilege-boundary violation in environments relying on NEMU for correct interrupt virtualization.
Severity: 0.0 | NA
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