Fastbin Attacks
Fastbins are the classical caching mechanism in glibc. While partially superseded by tcache in modern versions, they remain relevant when tcache is exhausted or disabled.
| Technique | Description |
| Fastbin Dup | The classic double-free leading to overlapping chunks. |
| Dup into Stack | Escalating a double-free to gain stack control. |
| Dup Consolidate | Bypassing size checks via malloc_consolidate. |
| House of Spirit | The original fastbin stack-allocation attack. |