2005-04-16 15:20:36 -07:00
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2007-04-30 00:21:02 -07:00
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2005-04-16 15:20:36 -07:00
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[PPPOE]: memory leak when socket is release()d before PPPIOCGCHAN has been called on it
below you find a patch that fixes a memory leak when a PPPoE socket is
release()d after it has been connect()ed, but before the PPPIOCGCHAN ioctl
ever has been called on it.
This is somewhat of a security problem, too, since PPPoE sockets can be
created by any user, so any user can easily allocate all the machine's
RAM to non-swappable address space and thus DoS the system.
Is there any specific reason for PPPoE sockets being available to any
unprivileged process, BTW? After all, you need a packet socket for the
discovery stage anyway, so it's unlikely that any unprivileged process
will ever need to create a PPPoE socket, no? Allocating all session IDs
for a known AC is a kind of DoS, too, after all - with Juniper ERXes,
this is really easy, actually, since they don't ever assign session ids
above 8000 ...
Signed-off-by: Florian Zumbiehl <florz@florz.de>
Acked-by: Michal Ostrowski <mostrows@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-20 16:58:14 -07:00
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2005-04-16 15:20:36 -07:00
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2005-12-27 20:57:40 -08:00
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2005-04-16 15:20:36 -07:00
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2005-12-27 20:57:40 -08:00
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2005-04-16 15:20:36 -07:00
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2007-04-30 00:21:02 -07:00
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2005-04-16 15:20:36 -07:00
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2005-12-27 20:57:40 -08:00
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2005-04-16 15:20:36 -07:00
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