Vulnerability in Red Hat Ceph Storage 9

[ Description ]Official description

A flaw was found in dnsmasq. When following a CNAME in a DNS response, the resolver can cache records for the CNAME target without checking that those records belong to the responding server's authorized zone. In split-DNS deployments that send some domains to a specific upstream, an attacker who controls that upstream can inject cache entries for unrelated names. Later clients may then receive attacker-chosen addresses for those names.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund29 Oct 2026WID-SEC-2026-4256

  dnsmasq: Multiple vulnerabilities Translated from German

  CVE-2026-93008CVE-2026-93009CVE-2026-93010+3 more CVEs

[ References ]References

• access.redhat.com/security/cve/CVE-2026-93008
• bugzilla.redhat.com/show_bug.cgi