CVE-2026-34979

Publication date 3 April 2026

Last updated 8 June 2026

Ubuntu priority

Cvss 3 Severity Score

Description

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cups	26.04 LTS resolute	Fixed 2.4.16-1ubuntu1.2
	25.10 questing	Fixed 2.4.12-0ubuntu3.9
	24.04 LTS noble	Fixed 2.4.7-1.2ubuntu7.13
	22.04 LTS jammy	Fixed 2.4.1op1-1ubuntu4.20
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

Patch details

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

Package	Patch details
cups	Upstream: 0ff8897 Upstream: da0ff58 Upstream: 169d216

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-8405-1
CUPS vulnerabilities
8 June 2026