CVE-2025-32990

Publication date 10 July 2025

Last updated 12 September 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnutls28	25.10 questing	Fixed 3.8.9-3ubuntu1
	25.04 plucky	Fixed 3.8.9-2ubuntu3.1
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 3.8.3-1.1ubuntu3.4
	22.04 LTS jammy	Fixed 3.7.3-4ubuntu1.7
	20.04 LTS focal	Fixed 3.6.13-2ubuntu1.12+esm1
	18.04 LTS bionic	Fixed 3.5.18-1ubuntu1.6+esm2
	16.04 LTS xenial	Fixed 3.4.10-4ubuntu1.9+esm2

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
gnutls28	Upstream: 408bed4

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	Low
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L