{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-29642", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-04-20T20:30:19.577Z", "dateReserved": "2026-03-04T00:00:00.000Z", "datePublished": "2026-04-20T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-04-20T20:30:19.577Z"}, "descriptions": [{"lang": "en", "value": "A local attacker who can execute privileged CSR operations (or can induce firmware to do so) performs carefully crafted reads/writes to menvcfg (e.g., csrrs in M-mode). On affected XiangShan versions (commit aecf601e803bfd2371667a3fb60bfcd83c333027, 2024-11-19), these menvcfg accesses can unexpectedly set WPRI (reserved) bits in the status view (xstatus) to 1. RISC-V defines WPRI fields as \"writes preserve values, reads ignore values,\" i.e., they must not be modified by software manipulating other fields, and menvcfg itself contains multiple WPRI fields."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/OpenXiangShan/XiangShan/issues/3934"}, {"url": "https://github.com/OpenXiangShan/XiangShan/commit/5e3dd63"}, {"url": "https://docs.riscv.org/reference/isa/priv/priv-csrs.html"}, {"url": "https://docs.riscv.org/reference/isa/priv/machine.html"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A local attacker who can execute privileged CSR operations (or can induce firmware to do so) performs carefully crafted reads/writes to menvcfg (e.g., csrrs in M-mode). On affected XiangShan versions (commit aecf601e803bfd2371667a3fb60bfcd83c333027, 2024-11-19), these menvcfg accesses can unexpectedly set WPRI (reserved) bits in the status view (xstatus) to 1. RISC-V defines WPRI fields as \"writes preserve values, reads ignore values,\" i.e., they must not be modified by software manipulating other fields, and menvcfg itself contains multiple WPRI fields."}], "id": "CVE-2026-29642", "lastModified": "2026-04-20T21:16:19.393", "metrics": {}, "published": "2026-04-20T21:16:19.393", "references": [{"source": "cve@mitre.org", "url": "https://docs.riscv.org/reference/isa/priv/machine.html"}, {"source": "cve@mitre.org", "url": "https://docs.riscv.org/reference/isa/priv/priv-csrs.html"}, {"source": "cve@mitre.org", "url": "https://github.com/OpenXiangShan/XiangShan/commit/5e3dd63"}, {"source": "cve@mitre.org", "url": "https://github.com/OpenXiangShan/XiangShan/issues/3934"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received"}

{}