Highlights
Auth Bypass: 7 prior fixes. Scrutinize any change in this area.
fuel-vm: most-fixed (10 issues). Treat as high-risk during review.
16 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.
Memory Safety: The VM is prone to memory boundary issues where incorrect checks, miscalculated range limits, or improper register usage can leak or corrupt memory across stack, heap, and instruction bounds. Exploiting these can lead to sandbox escapes or arbitrary write operations.
Auth Bypass: Bypassing signature and predicate checks in transaction validation can allow malicious execution or unauthorized state alterations, representing a direct threat to the VM's security posture.
Integer Overflow: Unchecked arithmetic when computing memory offsets and lengths during call-frame restoration or variable output writing can result in severe out-of-bounds memory corruption.