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bdu:2023-07919

EUVD-2026-212116

fkie_cve-2023-1732

When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read() function), this could lead to a predictable shared secret.

The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides crypto/rand.Reader, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.

GHSA-2q89-485c-9j2x — Improper random reading in CIRCL

Affected: Go: github.com/cloudflare/circl

### Impact When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether `crypto/rand.Read()` returns an error. In rare deployment cases (error thrown by the `Read()` function), this could lead to a predictable shared secret.

The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides `crypto/rand.Reader`, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.

### Patches The fix was introduced in CIRCL v. 1.3.3

gsd-2023-1732

openSUSE-SU-2025:14663-1 — velociraptor-0.7.0.4.git142.862ef23-1.1 on GA media

velociraptor-0.7.0.4.git142.862ef23-1.1 on GA media