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.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7	Exploit Vendor Advisory Mitigation

Configurations

Configuration 1 (hide)

cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*

History

16 Apr 2026, 18:13

Type	Values Removed	Values Added
References	~~() https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7 -~~	() https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7 - Exploit, Vendor Advisory, Mitigation
CPE		cpe:2.3:a:openprinting:cups::::::::
First Time		Openprinting cups Openprinting

07 Apr 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-07 17:16

Updated : 2026-04-16 18:13

NVD link : CVE-2026-39314

Mitre link : CVE-2026-39314

CVE.ORG link : CVE-2026-39314

JSON object : View

Products Affected

openprinting

cups

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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