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CVE-2026-29647

MEDIUM

6.5

Description

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.

Details CVE

Score CVSS v3.16.5

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie4/20/2026

Derniere modification4/21/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-269

References

https://docs.riscv.org/reference/isa/priv/smstateen.html#state-enable-0-registers(cve@mitre.org)

https://github.com/OpenXiangShan/NEMU/issues/691(cve@mitre.org)

https://github.com/OpenXiangShan/XiangShan/pull/3978(cve@mitre.org)

https://github.com/OpenXiangShan/NEMU/issues/691(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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