PT-2026-30924 · Openprinting · Cups

Tomer-Pl · Published 2026-04-07 · Updated 2026-06-02 · CVE-2026-39314

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenPrinting CUPS versions 2.4.16 and prior

Description OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. An integer underflow in the ppdCreateFromIPP() function (cups/ppd-cache.c) allows a local user to crash the cupsd root process by providing a negative job-password-supported IPP attribute. The validation only limits the upper bound, allowing a negative value to pass, which is then cast to size t, wrapping to a large positive value, and used as the length argument to memset() on a 33-byte stack buffer. This results in a SIGSEGV in the cupsd root process, potentially leading to a denial of service when combined with systemd's Restart=on-failure setting.

Recommendations Update to a version of OpenPrinting CUPS later than 2.4.16.

Fix

Integer Underflow

Weakness Enumeration

CWE-191

Related Identifiers

CVE-2026-39314

ECHO-B289-5966-D14F

OESA-2026-1930

OESA-2026-1931

OESA-2026-1932

OESA-2026-1933

OESA-2026-2020

OESA-2026-2021

OPENSUSE-SU-2026:10589-1

RHSA-2026:8814

Affected Products

Cups

References · 40

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1932 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10589-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-39314 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-39314 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-39314 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34978 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2020 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-27447 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34979 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2021 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-39314 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-39314 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34980 · Security Note
• https://osv.dev/vulnerability/OESA-2026-1931 · Vendor Advisory