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authorPatrick McHardy <kaber@trash.net>2007-07-10 23:24:52 -0700
committerDavid S. Miller <davem@davemloft.net>2007-07-10 23:24:52 -0700
commit99d24edeb6abc6ca3a0d0fbdb83c664c04403c8c (patch)
tree1ddcd854dd106878c4e7fcc55147131a137d4aca /net/unix
parent56b3d975bbce65f655c5612b4822da671f9fd9b2 (diff)
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[NETFILTER]: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference (CVE-2007-2876)
When creating a new connection by sending an unknown chunk type, we don't transition to a valid state, causing a NULL pointer dereference in sctp_packet when accessing sctp_timeouts[SCTP_CONNTRACK_NONE]. Fix by don't creating new conntrack entry if initial state is invalid. Noticed by Vilmos Nebehaj <vilmos.nebehaj@ramsys.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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