Incorrect Calculation of Buffer Size Affecting dnsmasq-utils-debuginfo package, versions <0:2.90-7.el10_2


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.61% (47th percentile)

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  • Snyk IDSNYK-CENTOS10-DNSMASQUTILSDEBUGINFO-16769300
  • published20 May 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

CVE-2026-2291  (opens in a new tab)
CWE-131  (opens in a new tab)

How to fix?

Upgrade Centos:10 dnsmasq-utils-debuginfo to version 0:2.90-7.el10_2 or higher.

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 Centos. See How to fix? for Centos:10 relevant fixed versions and status.

dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.

CVSS Base Scores

version 3.1