| Package | Affected versions | Patched versions |
|---|---|---|
| mysql | = 4.1.0 | |
| mysql | ≥ 3.20, < 3.23.49≥ 4.0.0, < 4.0.21 | 3.23.494.0.21 |
MySQL 4.x before 4.0.21, and 3.x before 3.23.49, allows attackers to cause a denial of service (crash or hang) via multiple threads that simultaneously alter MERGE table UNIONs.
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