Messages in this thread | | | Date | Wed, 4 Aug 2004 22:42:16 +0200 | From | Roger Luethi <> | Subject | Re: Interesting race condition... |
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On Wed, 04 Aug 2004 13:03:50 -0700, Robert White wrote: > Using procps version 2.0.7 the inclusion of "e" in the arguments is > documented to return environment of the process.
Not the environment of somebody else's process, though. But that is currently possible in mainline, the problem is not with ps but with the kernel.
> The question of why the original poster was getting the environment when > only using "ps ax" is interesting. I'd look for PS_PERSONALITY (etc) in
Basically, if anyone reads /proc/pid/cmdline early enough, when mm->arg_end is still 0, the kernel will blast out the process environment through that interface. Thus, you get the data of /proc/pid/environ without the access restrictions of that file. Not good if you happen to pass sensitive information using environment variables.
Check out the patch I posted earlier in this thread.
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