CVE-2025-9231

A flaw was found in the OpenSSL SM2 algorithm implementation on 64-bit ARM platforms. This vulnerability allows recovery of the private key via timing side-channel analysis during signature computations.

The vulnerability was rated as Moderate because, while it could enable recovery of private keys through timing side-channel analysis on 64-bit ARM platforms, successful exploitation requires high-precision timing measurements and a specialized attack setup. OpenSSL does not natively support SM2 certificates in TLS, limiting the exposure in common use cases. The issue only becomes relevant in custom provider contexts where SM2 is enabled, further reducing the likelihood of widespread impact. Therefore, although the confidentiality impact is high if exploited, the practical attack complexity and limited applicability justify a Moderate severity rating.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.