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 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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f	Vendor Advisory
https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apple:swift-crypto:*:*:*:*:*:swift:*:*

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Al inicializar una clave pública RSA a partir de bytes DER o PEM y se produce un error, el EVP_PKEY se libera dos veces: primero en el bloque catch y luego en el deinit. Esto puede provocar un fallo en futuras asignaciones de memoria. Esta doble liberación se manifiesta cuando BoringSSL no puede decodificar la clave pública a partir de los bytes proporcionados. Esta vulnerabilidad se aborda en la versión 4.5.1 de swift-crypto.

Information

Published : 2026-07-23 15:17

Updated : 2026-10-24 13:10

NVD link : CVE-2026-43823

Mitre link : CVE-2026-43823

CVE.ORG link : CVE-2026-43823

JSON object : View

Products Affected

apple

swift-crypto

CWE

CWE-415

Double Free

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