High7.5Red Hat & Ubuntu Linux
Remote Denial of Service via crafted ClientHello with invalid PSK binder
CVE-2026-1584 Published Feb 9, 2026
CVE-2026-1584
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Remote Denial of Service via crafted ClientHello with invalid PSK binder. Red Hat rates this important (CVSS 7.5). Weakness: CWE-476. Affected package(s): gnutls-main. Resolved in Red Hat advisory RHSA-2026:7477 — update the affected packages (`sudo dnf update`).
Affected versions
- gnutls-main-3.8.12-1.1.hum1
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:7477
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:7477 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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