Double Free

Freeing the same heap allocation twice, corrupting allocator metadata for control of execution.

Specifications & Metrics

cwe

CWE-415

impact

High

Core Principles & Analysis

• Cousin of use-after-free: both abuse heap bookkeeping rather than memory bounds.
• Historically a favourite in browser and kernel exploitation chains.
• Modern allocators add checks, but the bug class keeps resurfacing.