#double-free CTF challenges

20 CTF challenges using double-free from 17 CTFs (2017–2023), 20 with writeups. Mostly Misc (55%) and Pwn (45%).

Misc · 11 Pwn · 9

Often combined with

#fastbin-dup 5 #tcache-poisoning 4 #fastbin-attack 3 #got-overwrite 3 #use-after-free 2 #off-by-one 2 #malloc-hook-overwrite 2 #stdout-vtable 1 #fsop 1 #tcache 1 #heap 1 #glibc-2.27 1 #safe-linking 1 #mmap-chunk 1 #malloc-hook 1

Challenges

Filter and sort these in the challenge browser →