Vulnerability in Red Hat Ceph Storage 9

[ Description ]Official description

A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.

[ 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-2026-93011
• bugzilla.redhat.com/show_bug.cgi