High severity8.8NVD Advisory· Published Apr 20, 2026· Updated Apr 21, 2026
CVE-2026-29648
CVE-2026-29648
Description
In OpenXiangShan NEMU, when Smstateen is enabled, clearing mstateen0.ENVCFG does not correctly restrict access to henvcfg and senvcfg. As a result, less-privileged code may read or write these CSRs without the required exception, potentially bypassing intended state-enable based isolation controls in virtualized or multi-privilege environments.
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Affected products
2Patches
Vulnerability mechanics
References
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