Failed on Ubuntu 20.04 - 5.4.0-182-generic

[shriyakk]

test@test-ThinkCentre-M92p:~/Desktop/kernel-exploit-factory/CVE-2022-2588$ ./exploit
[] self path /home/test/Desktop/kernel-exploit-factory/CVE-2022-2588/./exploit
[] prepare evil data
Old limits -> soft limit= 14096 hard limit= 14096
[*] starting exploit, num of cores: 4
[1] defragmentation - spray 10000 file to exhaust all file slabs for cross cache
[2] spray (38+3)*32 kmalloc-192 & kmalloc-256
[3] allocate the vulnerable filter
[4] spray kmalloc-192 & kmalloc-256
[5] free (end-24)*32 kmalloc-192 & kmalloc-256
[6] 1st freed the filter object
[7] free (end-middle+1)*32 kmalloc-192 & kmalloc-256
[8] spray 4000 uprivileged file
[9] 2nd free the filter object
pause after 2nd free
[10] spraying 5000 unprivileged file
[13] check whether we overwrite the privileged file
[-] no overlap found :(...
[-] failed