swift-crypto 4.5.1: Double-Free in RSA Public Key Init (BoringSSL)
CVE-2026-43823 Published on July 23, 2026
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.
Products Associated with CVE-2026-43823
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Affected Versions
Apple swift-crypto:- Before 4.5.1 is affected.