Cannot find cmnd size Ubuntu 16 / GLIB 2.23 about cve-2021-3156

[worawit]

It might be

• my exploit does not work with this configuration. I never found this case in my test VMs.
• the target is patched.

Note: my exploit should work with python2 and python3 without converting

Oh oke, what about work on old kernels 2.6.x ?! I get same error on any old kernels configurations.

[worawit]

Kernel 2.6.x should not have any effect on exploitation. I can exploit on CentOS 6, sudo version 1.8.6.

Normally, my exploit might because because of difference in sudo and glibc version/configuration.

Also most Linux with kernel 2.6.x were released with sudo version 1.7.x or very old 1.8.x which my exploit does not support.
Don't forget checking an exploit requirements from head of a file.