CVE-2026-43823

Description

When initializing an RSA public key from DER or PEM bytes throws an error, the EVP_PKEY* is double-freed: first in the catch block, then in the deinit. This can lead to a crash on future memory allocations. This double-free manifests when BoringSSL cannot decode the public key from the bytes provided. This vulnerability is addressed in swift-crypto version 4.5.1.

CVSS Vector

References

• https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f
• https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f