{"id":"CVE-2026-3579","summary":"Non-constant time multiplication subroutine __muldi3 on RISC-V RV32I","details":"wolfSSL 5.8.4 on RISC-V RV32I architectures lacks a constant-time software implementation for 64-bit multiplication. The compiler-inserted __muldi3 subroutine executes in variable time based on operand values. This affects multiple SP math functions (sp_256_mul_9, sp_256_sqr_9, etc.), leading to a timing side-channel that may expose sensitive cryptographic data.","modified":"2026-10-28T02:30:56.581686178Z","published":"2026-03-19T19:37:23.642Z","database_specific":{"cwe_ids":["CWE-203"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3579.json","cna_assigner":"wolfSSL"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3579.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3579"},{"type":"FIX","url":"https://github.com/wolfSSL/wolfssl/pull/9855"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wolfssl/wolfssl","events":[{"introduced":"59f4fa568615396fbf381b073b220d1e8d61e4c2"},{"fixed":"922d04b3568c6428a9fb905ddee3ef5a68db3108"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"fixed":"5.9.0"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"},{"source":"CPE_STRING","cpe":"cpe:2.3:a:wolfssl:wolfssl:5.8.4:*:*:*:*:*:*:*","range":[{"introduced":"5.8.4"},{"last_affected":"5.8.4"}]}]}}],"versions":["5.8.4","v5.8.4-stable","wolfEntropy2d"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3579.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N"}]}