CVE-2026-13002: Red Hat Enterprise Linux

Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days.

A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.

Affected products

• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only
• Red Hat Openshift Container Platform: version 4.0 only

Published 2026-08-14. Last modified 2026-08-31.