kernel/linux.git/drivers/net/pppox.c, branch linux-2.6.16.y

PPPOE: fix memory leak (local DoS) (CVE-2007-2525)

2007-11-13T10:12:46+00:00

This patch 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 Signed-off-by: Adrian Bunk

[PPPOX]: Fix assignment into const proto_ops.

2006-01-03T21:11:23+00:00

And actually, with this, the whole pppox layer can basically be removed and subsumed into pppoe.c, no other pppox sub-protocol implementation exists and we've had this thing for at least 4 years. Signed-off-by: David S. Miller

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!