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selinux: Update SELinux SCTP documentation

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Update SELinux-sctp.rst "SCTP Peer Labeling" section to reflect
how the association permission is validated.

Reported-by: Dominick Grift <dac.override@gmail.com>
Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Richard Haines 2018-03-19 17:33:36 +00:00 committed by Paul Moore
parent 68741a8ada
commit d3cc2cd7c8
1 changed files with 6 additions and 5 deletions
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11
Documentation/security/SELinux-sctp.rst
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@ -116,11 +116,12 @@ statement as shown in the following example::
SCTP Peer Labeling
===================
An SCTP socket will only have one peer label assigned to it. This will be
assigned during the establishment of the first association. Once the peer
label has been assigned, any new associations will have the ``association``
permission validated by checking the socket peer sid against the received
packets peer sid to determine whether the association should be allowed or
denied.
assigned during the establishment of the first association. Any further
associations on this socket will have their packet peer label compared to
the sockets peer label, and only if they are different will the
``association`` permission be validated. This is validated by checking the
socket peer sid against the received packets peer sid to determine whether
the association should be allowed or denied.
NOTES:
1) If peer labeling is not enabled, then the peer context will always be