Denial of Service for IPv4 clients due to incorrect IPv6 subnet masking
Summary
Denial of Service for IPv4 clients due to incorrect IPv6 subnet masking. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-1389. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1774268173, devspaces/openvsx-rhel9:1779528224. Resolved in Red Hat advisory RHSA-2026:6309 — update the affected packages (`sudo dnf update`).
- ansible-automation-platform-tech-preview/mcp-server-rhel9:1774268173
- devspaces/openvsx-rhel9:1779528224
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
- RHSA-2026:6309
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:6309 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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