SB20260216168 - Ubuntu update for gnutls28

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Main Vulnerability Database SB20260216168

SB20260216168 - Ubuntu update for gnutls28

Published: February 16, 2026

Security Bulletin ID SB20260216168
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2025-14831)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when verifying certificates with a large amount of name constraints. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


2) Stack-based buffer overflow (CVE-ID: CVE-2025-9820)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the gnutls_pkcs11_token_init() function in lib/pkcs11_write.c when initializing the PKCS#11 token. A local user can trigger a stack-based buffer overflow and execute arbitrary code on the target system.


Remediation

Install update from vendor's website.

References