AWS Nitro Enclaves SDK fixes use-after-free and KMS spoofing flaws
What happened.Amazon Web Services published security bulletin 2026-157-AWS detailing memory corruption and service impersonation vulnerabilities in the AWS Nitro Enclaves SDK for C.
Why it matters.Confidential computing enclaves protect high-value cryptographic keys and proprietary algorithms from compromised host operating systems. When socket messages corrupt enclave memory and input defects permit KMS response spoofing, host-level attackers breach confidential computing guarantees. Infrastructure engineers running Nitro enclaves must rebuild enclave binaries with SDK v0.4.6. Security teams should audit attestation configurations to verify enclave image integrity.