Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-41565

Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-121 Desbordamiendo de búfer basado en pila (Stack)
Fecha de publicación:
28/05/2026
Última modificación:
29/05/2026

Descripción

*** Pendiente de traducción *** CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers.<br /> <br /> The gcm_decrypt_verify, ccm_decrypt_verify, chacha20poly1305_decrypt_verify and eax_decrypt_verify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcm_decrypt_verify, and 0.088_001 added it to the other three.<br /> <br /> Any caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.