On Thu, Sep 13, 2012 at 11:41:26PM +0200, Mathias Krause wrote: > When dump_one_state() returns an error, e.g. because of a too small > buffer to dump the whole xfrm state, xfrm_state_netlink() returns NULL > instead of an error pointer. But its callers expect an error pointer > and therefore continue to operate on a NULL skbuff. > > This could lead to a privilege escalation (execution of user code in > kernel context) if the attacker has CAP_NET_ADMIN and is able to map > address 0.
Or it simply crashes with a NULL pointer dereference. > > Cc: sta...@vger.kernel.org > Signed-off-by: Mathias Krause <mini...@googlemail.com> Acked-by: Steffen Klassert <steffen.klass...@secunet.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
