[CVE-2026-7531] Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-546…

Descripción técnica

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 (released in 5.9.1): a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory.

Puntuación CVSS

Score: 9.8/10 — Severidad: CRITICAL — Estado NIST: Analyzed

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Productos afectados

Wolfssl — Wolfssl

Debilidades (CWE)

CWE-416

Fuente oficial

Publicado en NIST NVD.