NULL Pointer Dereference Affecting cups-lpd-debuginfo package, versions <1:2.4.20-1.amzn2023.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-AMZN2023-CUPSLPDDEBUGINFO-22394534
  • published10 Nov 2026
  • disclosed9 Oct 2026

Introduced: 9 Oct 2026

CVE-2026-107890  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 cups-lpd-debuginfo to version 1:2.4.20-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3415.

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 before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.

CVSS Base Scores

version 3.1