Description
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.
Published: 2026-08-14
Score: 4.4 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

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History

Fri, 14 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Dnsmasq: infinite loop dos in dnssec nsec/nsec3 type bitmap parsing
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-835
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Redhat Enterprise Linux Openshift
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-14T16:09:15.195Z

Reserved: 2026-06-23T13:53:15.018Z

Link: CVE-2026-13002

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-14T16:16:49.267

Modified: 2026-08-14T17:17:11.500

Link: CVE-2026-13002

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T16:30:05Z

Weaknesses