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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade cups | Apr 29, 2026 | Apr 7, 2026 |
| Amazon_linux_2023 | — | Upgrade cups-libs-debuginfoUpgrade cups-printerappUpgrade cups-lpdUpgrade cupsUpgrade cups-client-debuginfoUpgrade cups-filesystemUpgrade cups-lpd-debuginfoUpgrade cups-develUpgrade cups-printerapp-debuginfoUpgrade cups-libsUpgrade cups-debuginfoUpgrade cups-debugsourceUpgrade cups-ipptoolUpgrade cups-ipptool-debuginfoUpgrade cups-client | May 4, 2026 | Apr 7, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Apr 7, 2026 |
| Ubuntu | — | Upgrade cups-daemonUpgrade cups | Jun 9, 2026 | Jun 8, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Apr 7, 2026 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub