Stack-based Buffer Overflow Affecting gnutls-utils package, versions <0:3.6.16-8.el8_10.5


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-ALMALINUX8-GNUTLSUTILS-15850807
  • published31 Mar 2026
  • disclosed10 Mar 2026

Introduced: 10 Mar 2026

CVE-2025-9820  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 gnutls-utils to version 0:3.6.16-8.el8_10.5 or higher.
This issue was patched in ALSA-2026:5585.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-utils package and not the gnutls-utils package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1