linux_dsm_epyc7002/security/selinux
Krister Johansen 4548b683b7 Introduce a sysctl that modifies the value of PROT_SOCK.
Add net.ipv4.ip_unprivileged_port_start, which is a per namespace sysctl
that denotes the first unprivileged inet port in the namespace.  To
disable all privileged ports set this to zero.  It also checks for
overlap with the local port range.  The privileged and local range may
not overlap.

The use case for this change is to allow containerized processes to bind
to priviliged ports, but prevent them from ever being allowed to modify
their container's network configuration.  The latter is accomplished by
ensuring that the network namespace is not a child of the user
namespace.  This modification was needed to allow the container manager
to disable a namespace's priviliged port restrictions without exposing
control of the network namespace to processes in the user namespace.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24 12:10:51 -05:00
..
include selinux: use the kernel headers when building scripts/selinux 2016-12-21 10:39:25 -05:00
ss Merge branch 'printk-cleanups' 2016-10-10 09:29:50 -07:00
.gitignore SELinux: add .gitignore files for dynamic classes 2009-10-24 09:42:27 +08:00
avc.c Merge branch 'next' of git://git.infradead.org/users/pcmoore/selinux into next 2015-08-15 13:29:57 +10:00
exports.c selinux: sparse fix: include selinux.h in exports.c 2011-09-09 16:56:32 -07:00
hooks.c Introduce a sysctl that modifies the value of PROT_SOCK. 2017-01-24 12:10:51 -05:00
Kconfig selinux: drop SECURITY_SELINUX_POLICYDB_VERSION_MAX 2016-08-18 20:01:15 -04:00
Makefile selinux: use absolute path to include directory 2016-01-28 10:37:15 -05:00
netif.c Merge commit 'v3.17' into next 2014-11-19 21:32:12 +11:00
netlabel.c calipso: Add a label cache. 2016-06-27 15:06:17 -04:00
netlink.c selinux: replace obsolete NLMSG_* with type safe nlmsg_* 2013-03-28 14:25:49 -04:00
netnode.c selinux: remove unused variabled in the netport, netnode, and netif caches 2014-08-07 20:55:30 -04:00
netport.c selinux: remove unused variabled in the netport, netnode, and netif caches 2014-08-07 20:55:30 -04:00
nlmsgtab.c rtnetlink: add new RTM_GETSTATS message to dump link stats 2016-04-20 15:43:42 -04:00
selinuxfs.c selinux: normalize input to /sys/fs/selinux/enforce 2016-11-20 17:13:19 -05:00
xfrm.c netfilter: Remove spurios included of netfilter.h 2015-06-18 21:14:32 +02:00