CVE detail
CVE-2026-29646
In OpenXiangShan NEMU prior to 55295c4, when running with RVH (Hypervisor extension) enabled, a VS-mode guest write to the supervisor interrupt-enable CSR (sie) may be handled incorrectly and can influence machine-level interrupt enable state (mie). This breaks privilege/virtualization isolation and can lead to denial of service or privilege-boundary violation in environments relying on NEMU for correct interrupt virtualization.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 20.8 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
7 source links · newest first
- https://github.com/OpenXiangShan/NEMU/pull/938/commits/55295c46580456d8d5a9d5736e1fda924b8825abgithub.com
No excerpt available.
Exploitgithub.comApr 20, 2026, 9:16 PM No excerpt available.
Exploitgithub.comApr 20, 2026, 9:16 PMNo excerpt available.
Exploitgithub.comApr 20, 2026, 9:16 PM- https://docs.riscv.org/reference/isa/unpriv/zicsr.htmldocs.riscv.org
No excerpt available.
Productdocs.riscv.orgApr 20, 2026, 9:16 PM No excerpt available.
Productdocs.riscv.orgApr 20, 2026, 9:16 PM- https://docs.riscv.org/reference/isa/priv/machine.htmldocs.riscv.org
No excerpt available.
Productdocs.riscv.orgApr 20, 2026, 9:16 PM No excerpt available.
Productdocs.riscv.orgApr 20, 2026, 9:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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