CVE-2026-29644

XiangShan open-source high-performance RISC-V processor commit edb1dfaf7d290ae99724594507dc46c2c2125384 2024-11-28 has improper gating of its distributed CSR write-enable path, allowing illegal CSR write attempts to alter custom PMA Physical Memory Attribute CSR state. Though the RISC-V privilege...

EUVD-2026-23960

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...

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...

CVE-2026-29643

The CVE relates to XiangShan’s CSR subsystem (NewCSR) in an open‑source RISC‑V processor. The flaw is an improper exceptional‑condition handling when CSR operations target non‑existent/custom CSR addresses, which may trigger an illegal‑instruction exception but fail to reliably transfer control t...