Out-of-bounds Read Affecting dnsmasq-utils package, versions <0:2.90-7.el10_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.68% (85th percentile)

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  • Snyk IDSNYK-RHEL10-DNSMASQUTILS-16766817
  • published20 May 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

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

How to fix?

Upgrade RHEL:10 dnsmasq-utils to version 0:2.90-7.el10_2 or higher.
This issue was patched in RHSA-2026:19158.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dnsmasq-utils package and not the dnsmasq-utils package as distributed by RHEL. See How to fix? for RHEL:10 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