Medium [CVE-2026-21968] Optimizer unspecified vulnerability (CPU Jan 2026)
This medium-severity Red Hat Linux advisory covers CVE-2026-21968 affecting Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 9, mariadb:10.11.
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Summary
Optimizer unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 6.5).
Affected package(s): mariadb:10.11, mysql8.4, mariadb10.11, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:0334 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
- mariadb:10.11-9040020251210090406.rhel9
- mysql8.4-0:8.4.8-1.el10_1
- mariadb10.11-3:10.11.15-1.el10_0
- mysql:8.0-8100020260223150324.489197e6
- mariadb:10.11-8100020260219154532.489197e6
- mysql-0:8.0.45-1.el9_7
- mariadb:10.11-9060020251210150813.rhel9
- mysql:8.4-8100020260219114250.489197e6
- mysql:8.4-9070020260313201256.rhel9
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:0334
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-2026:0334 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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