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commit: 3805de84f208d3e85057eab898de864af6128558 |
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Author: Nicolas Iooss <nicolas.iooss <AT> m4x <DOT> org> |
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AuthorDate: Sat Oct 18 13:30:21 2014 +0000 |
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Commit: Sven Vermeulen <swift <AT> gentoo <DOT> org> |
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CommitDate: Fri Oct 31 15:26:27 2014 +0000 |
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URL: http://sources.gentoo.org/gitweb/?p=proj/hardened-refpolicy.git;a=commit;h=3805de84 |
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Allow iw to create generic netlink sockets |
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|
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iw uses generic netlink socket to configure WiFi properties. For |
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example, "strace iw dev wlan0 set power_save on" outputs: |
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|
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socket(PF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_GENERIC) = 3 |
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setsockopt(3, SOL_SOCKET, SO_SNDBUF, [32768], 4) = 0 |
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setsockopt(3, SOL_SOCKET, SO_RCVBUF, [32768], 4) = 0 |
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bind(3, {sa_family=AF_NETLINK, pid=7836, groups=00000000}, 12) = 0 |
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|
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Some AVC denials are reported in audit.log: |
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|
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type=AVC msg=audit(1408829044.820:486): avc: denied { create } for |
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pid=5950 comm="iw" scontext=system_u:system_r:ifconfig_t |
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tcontext=system_u:system_r:ifconfig_t tclass=netlink_socket |
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permissive=1 |
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type=AVC msg=audit(1408829044.820:487): avc: denied { setopt } for |
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pid=5950 comm="iw" scontext=system_u:system_r:ifconfig_t |
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tcontext=system_u:system_r:ifconfig_t tclass=netlink_socket |
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permissive=1 |
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type=AVC msg=audit(1408829044.820:488): avc: denied { bind } for |
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pid=5950 comm="iw" scontext=system_u:system_r:ifconfig_t |
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tcontext=system_u:system_r:ifconfig_t tclass=netlink_socket |
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permissive=1 |
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type=AVC msg=audit(1408829044.820:489): avc: denied { getattr } |
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for pid=5950 comm="iw" scontext=system_u:system_r:ifconfig_t |
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tcontext=system_u:system_r:ifconfig_t tclass=netlink_socket |
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permissive=1 |
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type=AVC msg=audit(1408829044.820:490): avc: denied { write } for |
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pid=5950 comm="iw" scontext=system_u:system_r:ifconfig_t |
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tcontext=system_u:system_r:ifconfig_t tclass=netlink_socket |
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permissive=1 |
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|
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Allowing ifconfig_t to create generic netlink sockets fixes this. |
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|
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(On a side note, the AVC denials were caused by TLP, a tool which |
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applies "laptop configuration" when switching between AC and battery |
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with the help of a udev script) |
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|
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--- |
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policy/modules/system/sysnetwork.te | 1 + |
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1 file changed, 1 insertion(+) |
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|
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diff --git a/policy/modules/system/sysnetwork.te b/policy/modules/system/sysnetwork.te |
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index cb0922d..b95de37 100644 |
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--- a/policy/modules/system/sysnetwork.te |
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+++ b/policy/modules/system/sysnetwork.te |
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@@ -276,6 +276,7 @@ allow ifconfig_t self:msg { send receive }; |
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allow ifconfig_t self:udp_socket create_socket_perms; |
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# for /sbin/ip |
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allow ifconfig_t self:packet_socket create_socket_perms; |
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+allow ifconfig_t self:netlink_socket create_socket_perms; |
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allow ifconfig_t self:netlink_route_socket create_netlink_socket_perms; |
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allow ifconfig_t self:netlink_xfrm_socket { create_netlink_socket_perms nlmsg_read }; |
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allow ifconfig_t self:tcp_socket { create ioctl }; |
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