CVE-2026-64611

Libcupsfilters: cups-filters: libcupsfilters: cpu exhaustion via infinite loop in cfieee1284normalizemakemodel()

State: Published
Severity: 7.5 High
Published: Jul 23, 2026
Updated: Aug 19, 2026
Reserved: Jul 20, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	1:2.0.0-13.el10_2 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat

References

RHSA-2026:56965vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-64611vdb-entry
RHBZ#2502799issue-tracking
https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-rcq7-rv5g-j3r4

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.