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CVE-2026-29646 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://docs.riscv.org/reference/isa/priv/hypervisor.html MITRE
https://docs.riscv.org/reference/isa/priv/machine.html MITRE
https://docs.riscv.org/reference/isa/priv/supervisor.html MITRE
https://docs.riscv.org/reference/isa/unpriv/zicsr.html MITRE
https://github.com/OpenXiangShan/NEMU/issues/951 MITRE
https://github.com/OpenXiangShan/NEMU/pull/938 MITRE
https://github.com/OpenXiangShan/NEMU/pull/938/commits/55295c46580456d8d5a9d5736e1fda924b8825ab MITRE

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-29646
NVD Published Date:
04/20/2026
NVD Last Modified:
04/21/2026
Source:
MITRE