CVE-2026-43823

published 2026-07-23

CVE-2026-43823: 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…

Priority P3 38 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apple	swift-crypto	< 4.5.1	4.5.1
apple	swift-crypto	3.2.0 – 4.5.1	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

vendor_redhat 7.5 HIGH

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