Description

A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.

INFO

Published Date :

2026-01-26T19:58:32.886Z

Last Modified :

2026-05-05T20:38:01.286Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2025-9820 vulnerability.

Vendors Products
Redhat
  • Ceph Storage
  • Discovery
  • Enterprise Linux
  • Hummingbird
  • Insights Proxy
  • Openshift
  • Rhosemc
  • Rhui

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact