Medium · published October 9, 2026
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the qc_info plugin could be confused by a query containing embedded null bytes. Reading information_schema.query_cache_info after such a query was cached could access data beyond the end of a heap-allocated buffer, potentially disclosing adjacent memory or crashing the server. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
| Product | Versions | Fixed in |
|---|---|---|
| mariadb/mariadb | ≥ 10.6.1, < 10.6.28 | 10.6.28 |
| mariadb/mariadb | ≥ 10.11.1, < 10.11.19 | 10.11.19 |
| mariadb/mariadb | ≥ 11.4.1, < 11.4.13 | 11.4.13 |
| mariadb/mariadb | ≥ 11.8.1, < 11.8.9 | 11.8.9 |
| mariadb/mariadb | ≥ 12.3.1, < 12.3.3 | 12.3.3 |
| mariadb/mariadb | ≥ 13.0.1, < 13.0.2 | 13.0.2 |