{"id":"RUSTSEC-2026-0329","revision":"c3d8f1a081294e9a85dc47261468430e","records":[{"revision":"c3d8f1a081294e9a85dc47261468430e","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2026-0329","aliases":[],"title":"Auto-Reseeding HMAC-DRBG could panic for some output lengths","description":"The automatically reseeding implementations of HMAC-DRBG would panic if called with a desired non-zero output length cleanly divisible by `65_536`, the maximum number of output bytes that can be generated before reseeding has to happen.\n\n# Impact\n\nAn application relying on `libcrux-hmac-drgb` to provide randomness of byte length a non-zero integer multiple of `65_536` in a single call to `fill_bytes` would panic.\n\nAny calls with output buffer lengths not cleanly divisible by `65_536` are not affected.\n\n# Mitigation\n\nWith release the release of version `0.0.2` of `libcrux-hmac-drbg` this bug has been fixed and reseeding DRBG implementations can be used with arbitrary output lengths.\n\nWe recommend users upgrade to `libcrux-hmac-drbg` version `0.0.2`.","state":0,"publishedAt":"2026-08-03T12:00:00+00:00","modifiedAt":"2026-10-07T08:30:02.8467699+00:00","affected":[{"ecosystem":"crates.io","name":"libcrux-hmac-drbg","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"},{"kind":"fixed","version":"0.0.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":null,"severity":null}],"references":["https://crates.io/crates/libcrux-hmac-drbg","https://rustsec.org/advisories/RUSTSEC-2026-0329.html","https://github.com/celabshq/libcrux/pull/1558"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0329","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2026-0329","identifiers":["RUSTSEC-2026-0329"]},"retained":false,"historicalAffected":[]}],"coverage":[]}