VNX-788 – Access of Memory Location After End of Buffer

Overview

VNX-788 maps to CWE-788: Access of Memory Location After End of Buffer. Detects source patterns associated with CWE-788 (Access of Memory Location After End of Buffer). Each finding should be manually reviewed for exploitability in context.

Severity: High | CWE: CWE-788 | Languages: c

Why This Matters

This weakness class (Access of Memory Location After End of Buffer) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-788 and surfaces them for review. Each finding should be evaluated in context — the rule catches the pattern, not the context.

What Gets Flagged

// FLAGGED: contains 'buf[size]' pattern
buf[size]

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-788 or a false positive.
  2. Replace the flagged construct with a documented safe alternative appropriate to your language and framework.
  3. For confirmed false positives, add a # vulnetix-ignore: VNX-788 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References