关键信息 漏洞描述 类型: invalid memory address or nil pointer dereference in expression.inferCollation 编号: #53580 状态: Closed Reproduction Steps 1. Minimal reproduce step: - Execute valid SQL: - Execute error SQL: - A crash occurs. 2. Expected Behavior: - No crashes expected. 3. Actual Behavior: - Runtime error: - Stack trace is provided in the logs. Affected Versions TiDB Versions: - 6.1 - 6.5 - 7.1 - 7.5 - 8.1 Severity Impact: panic Severity: major Resolution Fixed in: PR #53716 Fix Date: June 3, 2024 Fix Details: The issue was related to a nil pointer dereference in the function. The fix involved using instead of . Additional Information Reported by: ycybfhb Assigned to: YangKeao Closed: June 3, 2024 Related Tools and Techniques Automated database vulnerability testing tool developed by the BASS team from the School of Cyber Science and Technology at Beihang University. New fuzz testing tool for simplifying the creation of table statements and query statements.