# CVE-2026-34979: OpenPrinting CUPS: Heap overflow in `get_options()`

CVE-2026-34979 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2026-34979, released April 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-34979
- Priority: Routine
- CVSS: 5.3 (Moderate)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 3, 2026
- Weakness: Heap-based Buffer Overflow
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34979

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cups Debian 14 | 2.4.17-1 | [DEBIAN-CVE-2026-34979](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34979.md) | Apr 3, 2026 |
| Linux | cups Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups sles 15.7 | 2.2.7-150000.3.93.1 | [SUSE-SU-2026:2732-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2732-1.md) | Jul 2, 2026 |
| Linux | cups-bsd Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-bsd 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-bsd-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-bsd Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-bsd 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-bsd-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-bsd Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-bsd 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-bsd-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-bsd Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-bsd 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-bsd-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-client Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-client 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-client-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-client Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-client 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-client-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-client Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-client 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-client-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-client Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-client 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-client-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-client amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-client-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-common Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-common 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-common-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-common Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-common 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-common-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-common Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-common 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-common-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-common Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-common 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-common-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-core-drivers Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-core-drivers 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-core-drivers-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-core-drivers Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-core-drivers 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-core-drivers-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-core-drivers Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-core-drivers 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-core-drivers-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-core-drivers Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-core-drivers 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-core-drivers-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-daemon Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-daemon 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-daemon-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-daemon Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-daemon 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-daemon-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-daemon Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-daemon 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-daemon-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-daemon Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-daemon 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-daemon-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-debugsource amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-devel amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-filesystem amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-ipp-utils Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-ipp-utils 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-ipp-utils-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-ipp-utils Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-ipp-utils 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-ipp-utils-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-ipp-utils Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-ipp-utils 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-ipp-utils-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-ipp-utils Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-ipp-utils 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-ipp-utils-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-ipptool amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-ipptool-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-libs amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-libs-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-lpd amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-lpd-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-ppdc Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-ppdc 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-ppdc-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-ppdc Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-ppdc 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-ppdc-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-ppdc Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-ppdc 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-ppdc-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-ppdc Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-ppdc 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-ppdc-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | cups-printerapp amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-printerapp-debuginfo amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | [ALAS2023-2026-1635](https://patchblox.com/security/data/fix/linux/alas2023-2026-1635.md) | Apr 27, 2026 |
| Linux | cups-server-common Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [cups-server-common 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cups-server-common-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | cups-server-common Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [cups-server-common 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cups-server-common-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | cups-server-common Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [cups-server-common 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-cups-server-common-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | cups-server-common Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [cups-server-common 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cups-server-common-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | libcups2 Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [libcups2 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcups2-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | libcups2t64 Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [libcups2t64 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcups2t64-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | libcups2t64 Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [libcups2t64 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libcups2t64-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | libcups2t64 Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [libcups2t64 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libcups2t64-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |
| Linux | libcupsimage2 Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | [libcupsimage2 2.4.1op1-1ubuntu4.20](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcupsimage2-2.4.1op1-1ubuntu4.20.md) | Apr 24, 2026 |
| Linux | libcupsimage2t64 Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | [libcupsimage2t64 2.4.7-1.2ubuntu7.13](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcupsimage2t64-2.4.7-1.2ubuntu7.13.md) | Apr 24, 2026 |
| Linux | libcupsimage2t64 Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | [libcupsimage2t64 2.4.12-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libcupsimage2t64-2.4.12-0ubuntu3.9.md) | Apr 24, 2026 |
| Linux | libcupsimage2t64 Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | [libcupsimage2t64 2.4.16-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libcupsimage2t64-2.4.16-1ubuntu1.2.md) | Apr 24, 2026 |

---

Data as of 2026-11-08T13:06:02Z 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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