{"id":"CVE-2025-46723","state":"PUBLISHED","title":"OpenVM byte decomposition of pc in AUIPC chip can overflow","description":"OpenVM is a performant and modular zkVM framework built for customization and extensibility. In version 1.0.0, OpenVM is vulnerable to overflow through byte decomposition of pc in AUIPC chip. A typo results in the highest limb of pc being range checked to 8-bits instead of 6-bits. This results in the if statement never being triggered because the enumeration gives i=0,1,2, when instead the enumeration should give i=1,2,3, leaving pc_limbs[3] range checked to 8-bits instead of 6-bits. This leads to a vulnerability where the pc_limbs decomposition differs from the true pc, which means a malicious prover can make the destination register take a different value than the AUIPC instruction dictates, by making the decomposition overflow the BabyBear field. This issue has been patched in version 1.1.0.","publishedAt":"2025-05-02T22:18:55.696Z","updatedAt":"2025-05-06T14:37:52.764Z","severity":{"score":7.8,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","source":"GitHub_M"},"assigner":"GitHub_M","products":["openvm-org openvm"],"affected":[{"vendor":"openvm-org","product":"openvm","versions":[{"version":"= 1.0.0","status":"affected"}]}],"references":["https://github.com/openvm-org/openvm/security/advisories/GHSA-jf2r-x3j4-23m7","https://github.com/openvm-org/openvm/commit/68da4b50c033da5603517064aa0a08e1bbf70a01","https://cantina.xyz/code/c486d600-bed0-4fc6-aed1-de759fd29fa2/findings/21","https://github.com/openvm-org/openvm/blob/0f94c8a3dfa7536c1231465d1bdee5fc607a5993/extensions/rv32im/circuit/src/auipc/core.rs#L135","https://github.com/openvm-org/openvm/releases/tag/v1.1.0"],"weaknesses":["CWE-131"],"ingestedAt":"2026-10-29T20:09:17.366Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/46xxx/CVE-2025-46723.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-46723","state":"PUBLISHED","datePublished":"2025-05-02T22:18:55.696Z","dateUpdated":"2025-05-06T14:37:52.764Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-04-28T20:56:09.084Z"},"containers":{"cna":{"title":"OpenVM byte decomposition of pc in AUIPC chip can overflow","descriptions":[{"lang":"en","value":"OpenVM is a performant and modular zkVM framework built for customization and extensibility. In version 1.0.0, OpenVM is vulnerable to overflow through byte decomposition of pc in AUIPC chip. A typo results in the highest limb of pc being range checked to 8-bits instead of 6-bits. This results in the if statement never being triggered because the enumeration gives i=0,1,2, when instead the enumeration should give i=1,2,3, leaving pc_limbs[3] range checked to 8-bits instead of 6-bits. This leads to a vulnerability where the pc_limbs decomposition differs from the true pc, which means a malicious prover can make the destination register take a different value than the AUIPC instruction dictates, by making the decomposition overflow the BabyBear field. This issue has been patched in version 1.1.0."}],"affected":[{"vendor":"openvm-org","product":"openvm","versions":[{"version":"= 1.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/openvm-org/openvm/security/advisories/GHSA-jf2r-x3j4-23m7","name":"https://github.com/openvm-org/openvm/security/advisories/GHSA-jf2r-x3j4-23m7","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/openvm-org/openvm/commit/68da4b50c033da5603517064aa0a08e1bbf70a01","name":"https://github.com/openvm-org/openvm/commit/68da4b50c033da5603517064aa0a08e1bbf70a01","tags":["x_refsource_MISC"]},{"url":"https://cantina.xyz/code/c486d600-bed0-4fc6-aed1-de759fd29fa2/findings/21","name":"https://cantina.xyz/code/c486d600-bed0-4fc6-aed1-de759fd29fa2/findings/21","tags":["x_refsource_MISC"]},{"url":"https://github.com/openvm-org/openvm/blob/0f94c8a3dfa7536c1231465d1bdee5fc607a5993/extensions/rv32im/circuit/src/auipc/core.rs#L135","name":"https://github.com/openvm-org/openvm/blob/0f94c8a3dfa7536c1231465d1bdee5fc607a5993/extensions/rv32im/circuit/src/auipc/core.rs#L135","tags":["x_refsource_MISC"]},{"url":"https://github.com/openvm-org/openvm/releases/tag/v1.1.0","name":"https://github.com/openvm-org/openvm/releases/tag/v1.1.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-131","lang":"en","description":"CWE-131: Incorrect Calculation of Buffer Size","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-05-02T22:18:55.696Z"},"source":{"advisory":"GHSA-jf2r-x3j4-23m7","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-06T13:47:21.220851Z","id":"CVE-2025-46723","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-05-06T14:37:52.764Z"}}]}}}