dccp: Disable auto-loading as mitigation against local exploits

Forwarded: not-needed

We can mitigate the effect of vulnerabilities in obscure protocols by
preventing unprivileged users from loading the modules, so that they
are only exploitable on systems where the administrator has chosen to
load the protocol.

The 'dccp' protocol is not actively maintained or widely used.
Therefore disable auto-loading.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Gbp-Pq: Topic debian
Gbp-Pq: Name dccp-disable-auto-loading-as-mitigation-against-local-exploits.patch

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index b0b6e6a4784e5f503bd6e34dbd650d15129ec7cf..fb934a89b08efadfe0cea4eedca4efabde690ae3 100644 (file)
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -1071,8 +1071,8 @@ module_exit(dccp_v4_exit);
  * values directly, Also cover the case where the protocol is not specified,
  * i.e. net-pf-PF_INET-proto-0-type-SOCK_DCCP
  */
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 33, 6);
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 0, 6);
+/* MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 33, 6); */
+/* MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 0, 6); */
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
 MODULE_DESCRIPTION("DCCP - Datagram Congestion Controlled Protocol");

diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 78ee1b5acf1f1c18289817f1771588c892c41166..6832cfb89ae6526a990004445234b6657aca7786 100644 (file)
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1150,8 +1150,8 @@ module_exit(dccp_v6_exit);
  * values directly, Also cover the case where the protocol is not specified,
  * i.e. net-pf-PF_INET6-proto-0-type-SOCK_DCCP
  */
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 33, 6);
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 0, 6);
+/* MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 33, 6); */
+/* MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 0, 6); */
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
 MODULE_DESCRIPTION("DCCPv6 - Datagram Congestion Controlled Protocol");