CVE-2026-29648

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 control...

EUVD-2026-23962

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 control...

EUVD-2026-23944

NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg7:4 CBIE/CBCFE/CBZE-related fields is incorrectly masked/updated based on menvcfg7:4, so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to...

CVE-2026-29649

The CVE concerns NEMU’s RISC-V Hypervisor CSR handling. Specifically, henvcfg[7:4] (CBIE/CBCFE/CBZE fields) is incorrectly masked/updated by menvcfg[7:4], so a machine-mode write to menvcfg can implicitly modify the hypervisor environment configuration. This can cause incorrect enforcement of vir...

CVE-2026-29648

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 control...

NEMU 安全漏洞

NEMU is an open-source teaching system simulator developed by XiangShan. NEMU has a security vulnerability. This vulnerability arises when Smstateen is enabled, and the clearing of mstateen0.ENVCFG fails to properly restrict access to henvcfg and senvcfg. This may allow low-privilege code to bypa...

CVE-2026-29648

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 control...

CVE-2026-29648

In OpenXiangShan NEMU, when Smstateen is enabled, clearing mstateen0.ENVCFG fails to restrict access to henvcfg and senvcfg. This allows less-privileged code to read or write these CSRs without the required exception, potentially bypassing state-enable based isolation in virtualized or multi-priv...