High [CVE-2026-3593] Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation
This high-severity Red Hat Linux advisory covers CVE-2026-3593 affecting BIND 9, Red Hat Hardened Images.
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Summary
Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation. Red Hat rates this important (CVSS 7.4).
Weakness: CWE-825. Affected package(s): bind-main.
Resolved in Red Hat advisory RHSA-2026:7412 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Hardened Images.
- bind-main-9.18.48-1.1.hum1
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:7412
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:7412 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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