# CVE-2026-39314: CUPS has an integer underflow in `_ppdCreateFromIPP` causes root cupsd crash via negative `job-password-supported`

CVE-2026-39314 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2026-39314, released April 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-39314
- Priority: Routine
- CVSS: 6.2 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 7, 2026
- Weakness: Integer Underflow (Wrap or Wraparound)
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-39314

## Description

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's Restart=on-failure, an attacker can repeat the crash for sustained denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cups Debian 14 | 2.4.17-1 | [DEBIAN-CVE-2026-39314](https://patchblox.com/security/data/fix/linux/debian-cve-2026-39314.md) | Apr 7, 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 2026-11-09T01:18:40Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.