CTF challenges & writeups

58 challenges tagged #use-after-free ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
Phantom_Device #use-after-free (uaf)#refcount-mismatch #tcache-grooming #role-forgery	BDSec 2026	15.62	Pwn	files wu 1
SimpleNote #use-after-free (uaf)#tcache-poisoning #fastbin-fd-overwrite	BlitzCTF 2025	23.20	Pwn	files wu 1
oboe #kernel #heap-overflow #off-by-one #use-after-free (uaf)#rop #commit-creds #kpti-bypass	DiceCTF 2025 Quals	81.00	Pwn	files wu 1
cheap_logs #use-after-free (uaf)	DownUnderCTF 2025	91.66	Crypto	files wu 1
Baby_Kernel #kernel-exploitation #use-after-free (uaf)#jop	UIUCTF 2025	–	Pwn	files wu 2
UAP #use-after-free (uaf)#function-pointer-hijack	1337UP 2024	–	Pwn	files wu 1
corchat_v3 #sql-injection #use-after-free (uaf)#tcache-perthread-struct	corCTF 2024	55.00	Pwn	files wu 1
Maltigriti #use-after-free (uaf)#heap-overlap	1337UP 2023	24.23	Pwn	files wu 1
popcorn #heap #use-after-free (uaf)#function-pointer-overwrite #ret2win	DeadSec 2023	23.96	Pwn	files wu 1
chessrs #wasm #rust #use-after-free (uaf)#xss #web	DiceCTF 2023	36.70	Pwn	files wu 2
tinyfs #use-after-free (uaf)#arbitrary-write	TSG 2023	–	Pwn	files wu 3
kcipher #use-after-free (uaf)#kernel-uaf	corCTF 2023	36.97	Pwn	files wu 2
cache #heap #use-after-free (uaf)#tcache #heap-leak	Defcamp 2022	–	Pwn	files wu 3
baby-rop #heap #use-after-free (uaf)#glibc-2.34 #stack-pivot #seccomp #orw	DiceCTF 2022	24.82	Pwn	files wu 3
Free_Real_Estate #use-after-free (uaf)	NahamCon 2022	24.61	Pwn	files wu 1
ctf_sim #use-after-free (uaf)	TAMUctf 2022	–	Pwn	files wu 1
Quotebook #heap #use-after-free (uaf)#function-pointer-overwrite	DaVinciCTF 2021	24.50	Pwn	files wu 2
hashbrown #kernel #race-condition #use-after-free (uaf)#fg-kaslr-bypass	DiceCTF 2021	24.82	Pwn	files wu 1
Use_After_Freedom #use-after-free (uaf)	HSCTF 2021	–	Pwn	files wu 1
Plaidflix #use-after-free (uaf)#double-free #safe-linking #tcache-poisoning	PlaidCTF 2021	99.64	Pwn	files wu 1
The_Cobol_Job #use-after-free (uaf)#libcob #free-hook #proc-self-maps	PlaidCTF 2021	99.64	Pwn	files wu 1
sharing #shared-ptr #refcount-underflow #use-after-free (uaf)	RCTF 2021	–	Pwn	files wu 1
unistruct #stdvariant #iterator-invalidation #use-after-free (uaf)	RCTF 2021	–	Pwn	files wu 1
membership_management #use-after-free (uaf)#tcache-poisoning #overlapping-chunks	Securinets 2021 Quals	41.71	Pwn	files wu 1
Cache_7 #use-after-free (uaf)#tcache-poisoning	Shakti 2021	25.00	Pwn	files wu 2
University_Pwn #use-after-free (uaf)#tcache-poisoning	Tamil 2021	14.13	Pwn	files wu 1
cache_v2 #refcount-overflow #use-after-free (uaf)	TetCTF 2021	25.00	Misc	files wu 1
Monke #use-after-free (uaf)#tcache	UTCTF 2021	–	Pwn	files wu 1
CoffeeShop #use-after-free (uaf)	idekCTF 2021	24.56	Pwn	files wu 1
refcnt #use-after-free (uaf)#tcache-poisoning #fsop	ASIS 2020 Finals	64.97	Misc	files wu 1
zombie #use-after-free (uaf)	DownUnderCTF 2020	24.44	Misc	files wu 1
TemporaryFileSystemStorage #use-after-free (uaf)	FireShell 2020	24.49	Misc	files wu 1
atoms #use-after-free (uaf)	HITCON 2020	–	Misc	files wu 1
treecache_alyx #use-after-free (uaf)	HSCTF 2020	–	Misc	files wu 1
Lil_Chompy #use-after-free (uaf)#heap #arbitrary-read	SunshineCTF 2020	23.34	Misc	files wu 2
karte #use-after-free (uaf)#tcache-poisoning	TSG 2020	–	Misc	files wu 3
std_vector #use-after-free (uaf)	TSG 2020	–	Misc	files wu 3
Notepad #use-after-free (uaf)#tcache #format-string	VolgaCTF 2020 Quals	32.80	Misc	files wu 2
lil_wishes_db #use-after-free (uaf)#tcache #one-gadget	X-MAS 2020	–	Misc	files wu 2
fakev #use-after-free (uaf)	m0leCon 2020 Quals	24.55	Misc	files wu 1

Challenges