Expired Pointer Dereference Affecting cups-lpd-debuginfo package, versions <1:2.4.16-1.amzn2023.0.3


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-AMZN2023-CUPSLPDDEBUGINFO-16352301
  • published3 May 2026
  • disclosed7 Apr 2026

Introduced: 7 Apr 2026

CVE-2026-39316  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 cups-lpd-debuginfo to version 1:2.4.16-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-1635.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cups-lpd-debuginfo package and not the cups-lpd-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.

CVSS Base Scores

version 3.1