Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
python-cffi/cffi
main @ 26b3d3a
10
Fixes
0
CVEs
HIGH
Peak severity
Highlights
Denial of Service: 4 prior fixes. Scrutinize any change in this area.
c/_cffi_backend.c: most-fixed (7 issues). Treat as high-risk during review.
4 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Integer Overflow: Integer overflow vulnerabilities in structure size computations and dynamic memory allocations can cause size calculations to wrap around or be optimized away by compiler heuristics, resulting in undersized allocations and heap-buffer overflows.
Memory Corruption: Structural discrepancies between declared vs actual field sizes, misaligned variable-sized arrays, and passing structs with custom positions by value can bypass standard C ABI guarantees and cause out-of-bounds access or register-allocation corruption.
Denial of Service: Dynamic temporary argument conversions on the C call stack are prone to stack overflow bugs. Large conversion requests require fallback policies to avoid crashing the interpreter process.