Vulnerability in Red Hat Ceph Storage 9

[ Description ]Official description

A flaw was found in dnsmasq. The TCP DNS service uses a small fixed pool of child processes and does not set a receive timeout on client connections. A remote attacker can open idle TCP connections to port 53 and occupy the entire pool, preventing new TCP DNS connections and DNSSEC validation that requires TCP fallback. UDP DNS resolution continues, and occupied slots are released after a fixed lifetime.

[ 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-2026-93007
• bugzilla.redhat.com/show_bug.cgi