CVE-2026-64611
Received Received - Intake

libcupsfilters Infinite Loop in IEEE-1284 Device ID Processing

Publication date: 2026-07-23

Last updated on: 2026-07-23

Assigner: Red Hat, Inc.

Description
A flaw was found in libcupsfilters. The cfIEEE1284NormalizeMakeModel() function enters an infinite loop when processing a printer-advertised IEEE-1284 device ID with an empty model field, causing sustained CPU consumption. A network-adjacent attacker could exploit this by broadcasting a specially crafted printer advertisement, leading to denial of service.

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Meta Information

Published
2026-07-23
Last Modified
2026-07-23
Generated
2026-07-23
AI Q&A
2026-07-23
EPSS Evaluated
N/A
NVD
CVE-2026-64611
EUVD
EUVD-2026-47973

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

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Executive Summary

This is a denial-of-service vulnerability in libcupsfilters affecting versions up to 2.1.1. It occurs in the cfIEEE1284NormalizeMakeModel() function when processing printer device IDs with empty model fields. The function enters an infinite loop due to improper string handling, consuming 100% CPU indefinitely.

Impact Analysis

An attacker on the same network could exploit this by sending a malicious printer advertisement. This would cause the affected system to freeze with high CPU usage, disrupting services and making the system unresponsive until manually restarted.

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