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Untriaged
Permalink CVE-2026-3580
created 3 weeks, 5 days ago
Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V

In wolfSSL 5.8.4, constant-time masking logic in sp_256_get_entry_256_9 is optimized into conditional branches (bnez) by GCC when targeting RISC-V RV32I with -O3. This transformation breaks the side-channel resistance of ECC scalar multiplication, potentially allowing a local attacker to recover secret keys via timing analysis.

Affected products

wolfSSL
  • <5.9.0

Matching in nixpkgs

pkgs.wolfssl

Small, fast, portable implementation of TLS/SSL for embedded devices

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