Out-of-bounds Read Affecting dnsmasq-utils-debuginfo package, versions <0:2.90-1.amzn2023.0.3


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.84% (56th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-DNSMASQUTILSDEBUGINFO-16885263
  • published27 May 2026
  • disclosed11 May 2026

Introduced: 11 May 2026

CVE-2026-4891  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 dnsmasq-utils-debuginfo to version 0:2.90-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-1729.

NVD Description

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

A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.

CVSS Base Scores

version 3.1