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CVE-2026-13002

Dnsmasq: infinite loop dos in dnssec nsec/nsec3 type bitmap parsing PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Red Hat / Red Hat Enterprise Linux 10affected
Red Hat / Red Hat Enterprise Linux 6unaffected
Red Hat / Red Hat Enterprise Linux 7unaffected
Red Hat / Red Hat Enterprise Linux 8affected
Red Hat / Red Hat Enterprise Linux 9affected
Red Hat / Red Hat OpenShift Container Platform 4affected
Red Hat / Red Hat OpenShift Container Platform 4affected

CWE

CWE-835

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.