CVE-2026-93007: Dnsmasq: tcp/53 child-slot exhaustion starves dnssec validation
Red Hat · Red Hat Ceph Storage 9
Affected: Red Hat Ceph Storage 9 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 37% of scored CVEs
DescriptionCVE.org
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.
Affected products14
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Ceph Storage 9Versions not stated
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 6Versions not stated
- Red Hat · Red Hat Enterprise Linux 7Versions not stated
- Red Hat · Red Hat Enterprise Linux 8Versions not stated
- Red Hat · Red Hat Enterprise Linux 9Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 5Versions not stated
- Red Hat · Red Hat OpenShift Container Platform 5Versions not stated
- Red Hat · Red Hat OpenStack Platform 13 (Queens)Versions not stated
- Red Hat · Red Hat OpenStack Platform 18.0Versions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-93007 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.