Highlights
Denial of Service: 1 prior fix. Scrutinize any change in this area.
MySQLdb/_mysql.c: most-fixed (1 issue). Treat as high-risk during review.
1 high-severity fix in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Memory Corruption: The use of incorrect format specifiers in PyArg_ParseTuple (such as parsing an unsigned long using a signed integer specifier) causes stack buffer corruption or overflow when handling database connection controls like the kill method.
Denial of Service: Improper Python reference counting (missing Py_DECREF) on error-handling failure paths during result object initialization leads to unbounded memory growth and eventual application exhaustion.