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@@ -1012,6 +1012,12 @@ https://github.com/evdenis/cvehound
 
 [github.com/AravGarg/kernel-hacking/ctf-challs](https://github.com/AravGarg/kernel-hacking/tree/master/ctf-challs)
 
+0ctf2021: [source and exploit](https://github.com/YZloser/My-CTF-Challenges/tree/master/0ctf-2021-final/kernote), [writeup 2](https://org.anize.rs/0CTF-2021-finals/pwn/kernote)
+
+corCTF 2021 (fire-of-salvation): [source](https://github.com/Crusaders-of-Rust/corCTF-2021-public-challenge-archive/tree/main/pwn/fire-of-salvation), [writeup](https://www.willsroot.io/2021/08/corctf-2021-fire-of-salvation-writeup.html)
+
+corCTF 2021 (wall-of-perdition): [source](https://github.com/Crusaders-of-Rust/corCTF-2021-public-challenge-archive/tree/main/pwn/wall-of-perdition), [writeup](https://syst3mfailure.io/wall-of-perdition)
+
 Google CTF 2021 (pwn-fullchain): [source](https://github.com/google/google-ctf/tree/master/2021/quals/pwn-fullchain), [writeup](https://ptr-yudai.hatenablog.com/entry/2021/07/26/225308)
 
 Google CTF 2021 (pwn-ebpf): [source](https://github.com/google/google-ctf/tree/master/2021/quals/pwn-ebpf), [writeup](https://mem2019.github.io/jekyll/update/2021/07/19/GCTF2021-eBPF.html)
@@ -1020,8 +1026,12 @@ Google CTF 2021 (pwn-ebpf): [source](https://github.com/google/google-ctf/tree/m
 
 3kCTF 2021 (klibrary): [source](https://github.com/MaherAzzouzi/3k21-pwn/tree/main/klibrary), [writeup](https://meowmeowxw.gitlab.io/ctf/3k-2021-klibrary/)
 
+DEF CON CTF Qualifier 2021 (pza999): [source and exploit](https://github.com/o-o-overflow/dc2021q-pza999-public)
+
 DiceCTF 2021 (HashBrown): [writeup](https://www.willsroot.io/2021/02/dicectf-2021-hashbrown-writeup-from.html)
 
+hxp CTF 2020 (pfoten): [source](https://github.com/BrieflyX/ctf-pwns/blob/master/kernel/pfoten/pfoten-c3c4a46948257e62.tar.xz), [writeup](https://mem2019.github.io/jekyll/update/2020/12/21/hxp2020-pfoten.html)
+
 CUCTF 2020 (Hotrod): [writeup](https://syst3mfailure.io/hotrod)
 
 SpamAndFlags 2020 (Secstore): [writeup](https://pwnfirstsear.ch/2020/05/10/spamandhexctf2020-secstore.html#secstore-1)
@@ -1036,6 +1046,8 @@ N1 CTF 2020 (W2L): [writeup](https://github.com/Nu1LCTF/n1ctf-2020/blob/main/N1C
 
 Seccon Online 2020 (Kstack): [source, exploit and writeup](https://github.com/BrieflyX/ctf-pwns/tree/master/kernel/kstack)
 
+TokyoWesterns CTF 2020 (EEBPF): [source](https://github.com/BrieflyX/ctf-pwns/tree/master/kernel/eebpf), [writeup](https://github.com/leesh3288/CTF/blob/master/2020/TWCTF_2020/eebpf/writeup.md)
+
 r2con CTF 2020: [source](https://github.com/esanfelix/r2con2020-ctf-kernel), [exploit](https://github.com/dialluvioso/box/blob/master/r2con2020-ctf-kernel/exploit.c)
 
 ASIS CTF 2020 (Shared House): [writeup](https://ptr-yudai.hatenablog.com/entry/2020/07/06/000622#354pts-Shared-House-7-solves)