Out-of-bounds Read Affecting dnsmasq-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
0.69% (51st percentile)

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  • Snyk IDSNYK-AMZN2023-DNSMASQDEBUGINFO-16885403
  • published27 May 2026
  • disclosed11 May 2026

Introduced: 11 May 2026

CVE-2026-5172  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 dnsmasq-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-debuginfo package and not the dnsmasq-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.

CVSS Base Scores

version 3.1