AZL-112418
Dashboard / Vulnerabilities / AZL-112418
Summary: CVE-2026-93007 affecting package dnsmasq 2.93-1
Details: 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.
References: https://nvd.nist.gov/vuln/detail/CVE-2026-93007
Affected packages
Package
Name: dnsmasq
Purl: pkg:rpm/azure-linux/dnsmasq
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
