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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:584a56965b927e1159f504493eb48751efc11176f694cf1a882559219a15d864
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-267","description":"CWE-267 Privilege Defined With Unsafe Actions","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-267","description":"CWE-267 Privilege Defined With Unsafe Actions","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://docs.riscv.org/reference/isa/priv/hypervisor.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/6
{"url":"https://docs.riscv.org/reference/isa/priv/machine.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/0
{"url":"https://docs.riscv.org/reference/isa/priv/supervisor.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/5
{"url":"https://docs.riscv.org/reference/isa/unpriv/zicsr.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/4
{"url":"https://github.com/OpenXiangShan/NEMU/issues/951"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/1
{"url":"https://github.com/OpenXiangShan/NEMU/pull/938"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/2
{"url":"https://github.com/OpenXiangShan/NEMU/pull/938/commits/55295c46580456d8d5a9d5736e1fda924b8825ab"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95b6af6cf7a3f066b83191a2ace73612d7a3b09583f5b0a7cd24a72041899f7a · sha256:80a700e6c79a1c61… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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