CVE-2026-46654 Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss

Plonky3 is a toolkit for polynomial IOPs PIOPs. Prior to versions 0.4.3 and 0.5.3, an attacker controlling prover-side observations can craft distinct transcripts that produce identical challenges, breaking the binding property of Fiat-Shamir. This issue has been patched in versions 0.4.3 and 0.5...

UBUNTU-CVE-2024-45751

tgt aka Linux target framework before 1.0.93 attempts to achieve entropy by calling rand without srand. The PRNG seed is always 1, and thus the sequence of challenges is always identical...