High7.5Red Hat & Ubuntu Linux
Denial of Service via specially crafted DNS messages
CVE-2026-5946 Published May 21, 2026
CVE-2026-5946
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service via specially crafted DNS messages. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1287. Affected package(s): bind9.16, bind-main, bind9.18, bind. Resolved in Red Hat advisory RHSA-2026:23360 — update the affected packages (`sudo dnf update`).
Affected versions
- bind9.16-32:9.16.23-0.22.el8_10.6
- bind-main-9.18.49-1.hum1
- bind9.18-32:9.18.29-14.el9_8.2
- bind-32:9.11.36-16.el8_10.8
- bind-32:9.18.33-15.el10_2.2
- bind-32:9.16.23-40.el9_8.2
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
- RHSA-2026:23360
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:23360 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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