Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
explosion/cymem
master @ f4c3848
2
Fixes
0
CVEs
HIGH
Peak severity
Highlights
Denial of Service: 1 prior fix. Scrutinize any change in this area.
cymem.pyx: 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.
Double Free: Concurrent access to memory pool allocations, reallocations, and deallocations can result in double frees or use-after-free bugs. Ensuring robust thread synchronization via critical sections is necessary to prevent memory corruption in free-threaded environments.
Denial of Service: Memory pool deallocation is vulnerable to null-pointer dereferences if internal dictionaries holding memory addresses are garbage-collected or destroyed before the cleanup sequence executes.