# CVE-2026-64611: libcupsfilters: A flaw was found in libcupsfilters

CVE-2026-64611 is fixed in 5 products on 1 platform, first by RHSA-2026:56965, released June 14, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-64611
- Priority: High
- CVSS: 7.5 (moderate)
- EPSS: 0.0063
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 14, 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cups-filters opensuse-leap 16.0 | 1.28.17-bp160.2.1 | [OPENSUSE-SU-2026:21850-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21850-1.md) | Sep 14, 2026 |
| Linux | cups-filters sles 15.7 | 1.25.0-150200.3.31.1 | [SUSE-SU-2026:3935-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3935-1.md) | Sep 3, 2026 |
| Linux | libcupsfilters Fedora 43 | 1:2.1.1-9.fc43 | [FEDORA-2026-1ED9130CEA](https://patchblox.com/security/data/fix/linux/fedora-2026-1ed9130cea.md) | Aug 6, 2026 |
| Linux | libcupsfilters RHEL 10 | 2.0.0-13.el10_2 | [RHSA-2026:56965](https://patchblox.com/security/data/fix/linux/rhsa-2026-56965.md) | Jun 14, 2026 |
| Linux | libcupsfilters almalinux 10 | 1:2.0.0-13.el10_2 | [ALSA-2026:56965](https://patchblox.com/security/data/fix/linux/alsa-2026-56965.md) | Aug 19, 2026 |
| Linux | libcupsfilters ol 10 | 1:2.0.0-13.el10_2 | [ELSA-2026-56965](https://patchblox.com/security/data/fix/linux/elsa-2026-56965.md) | Aug 19, 2026 |
| Linux | libcupsfilters opensuse-leap 16.0 | 2.1.1-160000.3.1 | [OPENSUSE-SU-2026:21818-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21818-1.md) | Sep 9, 2026 |
| Linux | libcupsfilters rocky 10 | 1:2.0.0-13.el10_2 | [RLSA-2026:56965](https://patchblox.com/security/data/fix/linux/rlsa-2026-56965.md) | Aug 20, 2026 |
| Linux | libcupsfilters sles 16.0 | 2.1.1-160000.3.1 | [SUSE-SU-2026:23715-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23715-1.md) | Sep 9, 2026 |
| Linux | libcupsfilters-debuginfo Fedora 43 | 1:2.1.1-9.fc43 | [FEDORA-2026-1ED9130CEA](https://patchblox.com/security/data/fix/linux/fedora-2026-1ed9130cea.md) | Aug 6, 2026 |
| Linux | libcupsfilters-debugsource Fedora 43 | 1:2.1.1-9.fc43 | [FEDORA-2026-1ED9130CEA](https://patchblox.com/security/data/fix/linux/fedora-2026-1ed9130cea.md) | Aug 6, 2026 |
| Linux | libcupsfilters-devel Fedora 43 | 1:2.1.1-9.fc43 | [FEDORA-2026-1ED9130CEA](https://patchblox.com/security/data/fix/linux/fedora-2026-1ed9130cea.md) | Aug 6, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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