Vulnerability in Red Hat Ceph Storage 9

[ Description ]Official description

A flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.

[ 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-2026-93010
• bugzilla.redhat.com/show_bug.cgi