Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

openethereum/parity-ethereum
v2.7.2-stable @ 55c90d4
183
Fixes
0
CVEs
CRITICAL
Peak severity
46.9%
Coverage
Highlights
Denial of Service: 99 prior fixes. Scrutinize any change in this area.
src/executive.rs: most-fixed (13 issues). Treat as high-risk during review.
105 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.

Denial of Service: The EVM interpreter was historically prone to multiple critical denial-of-service panics due to integer overflows during gas calculations, out-of-bounds memory indexing during slicing (e.g., in CALLDATALOAD/CALLDATACOPY), and memory expansion before validating gas adequacy.
Denial of Service: EVM call/create recursion execution without strict stack depth tracking and child-thread dynamic allocation caused frequent thread stack overflow crashes during deep execution tracing.
Auth Bypass: Logical verification issues in Authority Round (AuRa) consensus allowed malicious or unsynchronized validators to bypass consensus state invariants, generate duplicate seals, or double-sign blocks.