VNX-910 – Use of Expired File Descriptor

Overview

VNX-910 maps to CWE-910: Use of Expired File Descriptor. Detects source patterns associated with CWE-910 (Use of Expired File Descriptor). Each finding should be manually reviewed for exploitability in context.

Severity: Low | CWE: CWE-910 | Languages: c, cpp

Why This Matters

This weakness class (Use of Expired File Descriptor) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-910 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 'close(' pattern
close(

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-910 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-910 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References