CVE-2026-29647
In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Deferred - cve@mitre.org
- Published
- 2026-04-20
- Last modified
- 2026-04-21
- Weaknesses
- CWE-269
References
- https://docs.riscv.org/reference/isa/priv/smstateen.html#state-enable-0-registers
- https://github.com/OpenXiangShan/NEMU/issues/691
- https://github.com/OpenXiangShan/XiangShan/pull/3978
