Re: copyfail challenge: making Perl version smaller

> Don't run it on your own machine, though, as it will mangle your `su` binary

The project's site says the effect is gone after rebooting.

And even if there was a lasting effect, what about booting Linux from a stick on an old box for testing?

Cheers Rolf
_{(addicted to the Perl Programming Language :)

see Wikisyntax for the Monastery}

Comment on Re: copyfail challenge: making Perl version smaller

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Re^2: copyfail challenge: making Perl version smaller by dmitri (Priest) on Apr 30, 2026 at 19:27 UTC
Yes, but until you reboot (or flush pagecache), the su command is bad. And some people do not reboot for a long time. I checked the functionality of the exploit in QEMU.	[reply]