Messages in this thread | | | Date | Wed, 23 Jan 2002 13:18:19 +0100 | From | Pavel Machek <> | Subject | Re: rm-ing files with open file descriptors |
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Hi!
> >> This could be hacked around ofcourse in fs/namei.c, so I tried > >> it for fun. And indeed, with a minor correction it works: > >> > >> % perl flink.pl > >> Success. > >> > >> I now have a flink-test2.txt file. That is pretty cool ;) > > > >It's also a security hole. > > How is linking back a file into the normal namespace anymore > a security hole as having it under /proc or keeping an fd to it > open?
Imagine you want to delete my file, you are root.
Before, you could rm it, then kill all my processes. Pavel -- (about SSSCA) "I don't say this lightly. However, I really think that the U.S. no longer is classifiable as a democracy, but rather as a plutocracy." --hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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