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.
Routine
CVSS
6.2
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
5th percentile
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
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| cups · Debian 14 | 2.4.17-1 | DEBIAN-CVE-2026-39314 | Apr 7, 2026 |
| cups · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups · sles 15.7 | 2.2.7-150000.3.93.1 | SUSE-SU-2026:2732-1 | Jul 2, 2026 |
| cups-bsd · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-bsd 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-bsd · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-bsd 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-bsd · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-bsd 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-bsd · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-bsd 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-client · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-client 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-client · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-client 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-client · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-client 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-client · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-client 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-client · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-client-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-common · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-common 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-common · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-common 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-common · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-common 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-common · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-common 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-core-drivers · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-core-drivers 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-core-drivers · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-core-drivers 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-core-drivers · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-core-drivers 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-core-drivers · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-core-drivers 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-daemon · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-daemon 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-daemon · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-daemon 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-daemon · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-daemon 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-daemon · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-daemon 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-debugsource · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-devel · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-filesystem · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-ipp-utils · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-ipp-utils 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-ipp-utils · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-ipp-utils 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-ipp-utils · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-ipp-utils 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-ipp-utils · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-ipp-utils 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-ipptool · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-ipptool-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-libs · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-libs-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-lpd · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-lpd-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-ppdc · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-ppdc 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-ppdc · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-ppdc 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-ppdc · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-ppdc 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-ppdc · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-ppdc 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| cups-printerapp · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-printerapp-debuginfo · amzn 2023 | 1:2.4.16-1.amzn2023.0.3 | ALAS2023-2026-1635 | Apr 27, 2026 |
| cups-server-common · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | cups-server-common 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| cups-server-common · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | cups-server-common 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| cups-server-common · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | cups-server-common 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| cups-server-common · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | cups-server-common 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| libcups2 · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | libcups2 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| libcups2t64 · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | libcups2t64 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| libcups2t64 · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | libcups2t64 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| libcups2t64 · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | libcups2t64 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
| libcupsimage2 · Ubuntu 22.04.1 LTS (jammy) | 2.4.1op1-1ubuntu4.20 | libcupsimage2 2.4.1op1-1ubuntu4.20 | Apr 24, 2026 |
| libcupsimage2t64 · Ubuntu 24.04.5 LTS (noble) | 2.4.7-1.2ubuntu7.13 | libcupsimage2t64 2.4.7-1.2ubuntu7.13 | Apr 24, 2026 |
| libcupsimage2t64 · Ubuntu 25.10 (questing) | 2.4.12-0ubuntu3.9 | libcupsimage2t64 2.4.12-0ubuntu3.9 | Apr 24, 2026 |
| libcupsimage2t64 · Ubuntu 26.04.1 LTS (resolute) | 2.4.16-1ubuntu1.2 | libcupsimage2t64 2.4.16-1ubuntu1.2 | Apr 24, 2026 |
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