A flaw was found in dnsmasq.
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.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Red Hat
- Product
- Red Hat Ceph Storage 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6
- CVSS v3.1
- 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness
- CWE-400
- Exposure class
- Edge / VPN / firewall, Storage / NAS, Operating system
- NVD status
- Awaiting Analysis
Why it ranks 21 (Routine)
- CVSS v3.1 5.3 medium
- Exposed product class: edge / VPN / firewall, hypervisor
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-93007 on this site · NVD · CVE.org · Vulnpedia
Related coverage
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