CVE-2022-2509

Publication date 1 August 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnutls28	23.04 lunar	Not affected
	22.10 kinetic	Fixed 3.7.7-2ubuntu1
	22.04 LTS jammy	Fixed 3.7.3-4ubuntu1.1
	20.04 LTS focal	Fixed 3.6.13-2ubuntu1.7
	18.04 LTS bionic	Fixed 3.5.18-1ubuntu1.6
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Ignored end of standard support

Notes

mdeslaur

per upstream, affects 3.6.0 to 3.7.6, but code in bionic looks similar

Patch details

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

Package	Patch details
gnutls28	Upstream: ce37f9e

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5550-1
GnuTLS vulnerabilities
4 August 2022