CVE-2026-39314

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.

The following products are affected by CVE-2026-39314 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39314.

URL	Resource
https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7
https://nvd.nist.gov/vuln/detail/CVE-2026-39314
https://www.cve.org/CVERecord?id=CVE-2026-39314