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 2455b0c0e4866f30895ce3297c2652d5623b0430..a004053c3191eadb7a9421c8f8c7fd3bae40f6c7 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 2be5c69824f94423e2f90b97938dd623a4fea9c7..2e4b69e2ae977c2ab2d84616d0c2a35880dfdc6e 100644 (file)
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1155,8 +1155,8 @@ 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");