What’s Vulnerable › Vulnerabilities

CVE-2026-64611: Libcupsfilters: cups-filters: libcupsfilters: cpu exhaustion via infinite loop in cfieee1284normalizemakemodel()

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-23 · updated 2026-08-19
• Weakness: CWE-835

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.

Affected products

• Red Hat Enterprise Linux 10: all versions — fixed in 1:2.0.0-13.el10_2

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 1:2.0.0-13.el10_2. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2026:56965
• https://access.redhat.com/security/cve/CVE-2026-64611
• https://bugzilla.redhat.com/show_bug.cgi?id=2502799
• https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-rcq7-rv5g-j3r4

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