Medium4.9Red Hat & Ubuntu Linux
Thread Pooling unspecified vulnerability (CPU Jan 2026)
CVE-2026-21964 Published Jan 20, 2026
CVE-2026-21964
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Thread Pooling unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 4.9). Affected package(s): mysql8.4, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:5580 — update the affected packages (`sudo dnf update`).
Affected versions
- mysql8.4-0:8.4.8-1.el10_1
- mysql:8.0-8100020260223150324.489197e6
- mysql-0:8.0.45-1.el9_7
- mysql:8.4-8100020260219114250.489197e6
- mysql:8.4-9070020260313201256.rhel9
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- RHSA-2026:5580
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:5580 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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