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Bug 1665815

Summary:	SELinux sometimes prevents sec=krb5 mounts [rhel-7.6.z]
Product:	Red Hat Enterprise Linux 7	Reporter:	RAD team bot copy to z-stream <autobot-eus-copy>
Component:	selinux-policy	Assignee:	Lukas Vrabec <lvrabec>
Status:	CLOSED ERRATA	QA Contact:	Milos Malik <mmalik>
Severity:	urgent	Docs Contact:	Mirek Jahoda <mjahoda>
Priority:	urgent
Version:	7.4	CC:	lvrabec, mgrepl, mjahoda, mmalik, plautrba, rvdwees, ssekidde, vmojzis, zpytela
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	selinux-policy-3.13.1-229.el7_6.9	Doc Type:	Bug Fix
Doc Text:	Previously, an allow rule for the gssd_t type was missing in the SELinux policy. As a consequence, SELinux in enforcing mode occasionally prevented processes running as gssd_t from accessing kernel keyrings of other processes and could block for example sec=krb5 mounts. The rule has been added to the policy, and processes running as gssd_t are now able to access keyrings of other processes.	Story Points:	---
Clone Of:	1487350	Environment:
Last Closed:	2019-01-29 17:24:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1487350
Bug Blocks:

Description RAD team bot copy to z-stream 2019-01-14 07:37:50 UTC

This bug has been copied from bug #1487350 and has been proposed to be backported to 7.6 z-stream (EUS).

Comment 2 Lukas Vrabec 2019-01-14 11:26:56 UTC

commit a7ea73e34ec7a875c21939b4ee6339f350598549 (HEAD -> rhel7.6-contrib, origin/rhel7.6-contrib)
Author: Lukas Vrabec <lvrabec>
Date:   Sun Jan 13 20:27:19 2019 +0100

    Allow gssd_t domain to read/write kernel keyrings of every domain.
    Resolves: rhbz#1665815
    
    This looks like a race condition bug in nfs version 4 when NFS is using
    kerberos for security.

commit 629d0bd3ce2797a7caf75ad1d6fea2fe2fcb6e05 (HEAD -> rhel7.6-base, origin/rhel7.6-base)
Author: Lukas Vrabec <lvrabec>
Date:   Sun Jan 13 19:29:52 2019 +0100

    Add interface domain_rw_all_domains_keyrings()
    Resolves: rhbz#1665815

Comment 4 Lukas Vrabec 2019-01-17 15:08:08 UTC

commit 767a049360aedc2ca2ae42bbd0f7f0c05af1ee0a (HEAD -> rhel7.6-base, origin/rhel7.6-base)
Author: Lukas Vrabec <lvrabec>
Date:   Thu Jan 17 15:47:09 2019 +0100

    Add new interface domain_manage_all_domains_keyrings()
    
    Resolves: rhbz#1665815


commit b51c2dd75b2de1bf691e455026dc937f7d17f49a (HEAD -> rhel7.6-contrib, origin/rhel7.6-contrib)
Author: Lukas Vrabec <lvrabec>
Date:   Thu Jan 17 15:51:28 2019 +0100

    Allow gssd_t domain to manage kernel keyrings of every domain.
    Resolves: rhbz#1665815
    
    This looks like a race condition bug in nfs version 4 when NFS is using kerberos for security.

Comment 8 errata-xmlrpc 2019-01-29 17:24:35 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:0192