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Diffstat (limited to 'tags/2.6.18-5/30021_nf_conntrack_sctp-null-deref.patch')
-rw-r--r--tags/2.6.18-5/30021_nf_conntrack_sctp-null-deref.patch49
1 files changed, 49 insertions, 0 deletions
diff --git a/tags/2.6.18-5/30021_nf_conntrack_sctp-null-deref.patch b/tags/2.6.18-5/30021_nf_conntrack_sctp-null-deref.patch
new file mode 100644
index 0000000..17117b6
--- /dev/null
+++ b/tags/2.6.18-5/30021_nf_conntrack_sctp-null-deref.patch
@@ -0,0 +1,49 @@
+From: Patrick McHardy <kaber@trash.net>
+Date: Tue, 5 Jun 2007 12:14:22 +0000 (+0200)
+Subject: [UBUNTU] CVE-2007-2876 NETFILTER: {ip, nf}_conntrack_sctp: fix remotely triggerable ...
+X-Git-Url: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-edgy.git;a=commitdiff;h=3ccb814b91bca2e0a6fe4b5d1c5dbb35a06a848b
+
+[UBUNTU] CVE-2007-2876 NETFILTER: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference
+
+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>
+
+CC: Kiran Kumar Immidi <immidi_kiran@yahoo.com>
+Cc: David Miller <davem@davemloft.net>
+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>
+
+modified: net/ipv4/netfilter/ip_conntrack_proto_sctp.c
+modified: net/netfilter/nf_conntrack_proto_sctp.c
+---
+
+--- a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
++++ b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
+@@ -461,7 +461,8 @@ static int sctp_new(struct ip_conntrack
+ SCTP_CONNTRACK_NONE, sch->type);
+
+ /* Invalid: delete conntrack */
+- if (newconntrack == SCTP_CONNTRACK_MAX) {
++ if (newconntrack == SCTP_CONNTRACK_NONE ||
++ newconntrack == SCTP_CONNTRACK_MAX) {
+ DEBUGP("ip_conntrack_sctp: invalid new deleting.\n");
+ return 0;
+ }
+--- a/net/netfilter/nf_conntrack_proto_sctp.c
++++ b/net/netfilter/nf_conntrack_proto_sctp.c
+@@ -467,7 +467,8 @@ static int sctp_new(struct nf_conn *conn
+ SCTP_CONNTRACK_NONE, sch->type);
+
+ /* Invalid: delete conntrack */
+- if (newconntrack == SCTP_CONNTRACK_MAX) {
++ if (newconntrack == SCTP_CONNTRACK_NONE ||
++ newconntrack == SCTP_CONNTRACK_MAX) {
+ DEBUGP("nf_conntrack_sctp: invalid new deleting.\n");
+ return 0;
+ }