Re: [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps

[Stas Sergeev]

Hi.

Arjan van de Ven wrote:
> and chmod o-x bash ....
> at which point.. game over.
> (and yes you can do in bash pretty much what you can do in perl. heck
> you can prove that.. shell is turning complete ;)
Can I do a syscalls from a bash script?
But in any case, I am not going to suggest any
solution against a script-loader - the mmap change
doesn't prevent that too.
Instead I'd like to evaluate a few ideas about an
ld.so problem. One of which is to _enforce_ the "noexec",
just as you asked for. :)
Please have a look at this patch:
http://uwsg.ucs.indiana.edu/hypermail/linux/kernel/0610.0/1402.html
The primary goal is to make access() to respect the "noexec".

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