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Message #105223
[Bug 1424727] Re: NFS access not revoked on kdestroy
Command didn't work remotely, nothing relevant is in syslog/kern.og.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Description changed:
1) Ubuntu 14.04
- 2) 3.13 kernel or mainline kernel 3.19.
+ 2) 3.13 kernel or mainline kernel 3.19.
krb5-user [1.12+dfsg-2ubuntu5.1]
- nfs-common [1:1.2.8-6ubuntu1]
+ nfs-common [1:1.2.8-6ubuntu1]
3) What should happen:
Start as unpriviledged (in a kerberos sense) user with access to a kerberos protected NFS share (in this case it contains home directories)
kinit user1
ls ~user1 #Test user1 permissions, this should always succeed (and does)
kdestroy #should destroy user1 permissions
kinit user2
ls ~user2# this should succeed!
ls ~user1# this should fail!
4) What happened instead:
After kinit user2:
ls ~user2# this FAILS
ls ~user1# this still WORKS
This appears to be known upstream:
http://www.citi.umich.edu/projects/nfsv4/linux/faq/#krb5_006
Bits and pieces of an earlier attempt at a fix:
http://www.spinics.net/lists/linux-nfs/msg34236.html
- nfslogin/logout prototype http://www.citi.umich.edu/projects/asci/icsi-alpha/nfs-utils-patches/1.0.10-asci-2/nfs-utils-1.0.10-asci-017-add_nfslogin.dif
+ nfslogin/logout prototype http://www.citi.umich.edu/projects/asci/icsi-alpha/nfs-utils-patches/1.0.10-asci-2/nfs-utils-1.0.10-asci-017-add_nfslogin.dif
Another bug request: https://fedorahosted.org/gss-proxy/ticket/1 (and
linked discussion)
+
+ Workarounds:
+ Unmount/Mount NFS share
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https://bugs.launchpad.net/bugs/1424727
Title:
NFS access not revoked on kdestroy
Status in linux package in Ubuntu:
Confirmed
Bug description:
1) Ubuntu 14.04
2) 3.13 kernel or mainline kernel 3.19.
krb5-user [1.12+dfsg-2ubuntu5.1]
nfs-common [1:1.2.8-6ubuntu1]
3) What should happen:
Start as unpriviledged (in a kerberos sense) user with access to a kerberos protected NFS share (in this case it contains home directories)
kinit user1
ls ~user1 #Test user1 permissions, this should always succeed (and does)
kdestroy #should destroy user1 permissions
kinit user2
ls ~user2# this should succeed!
ls ~user1# this should fail!
4) What happened instead:
After kinit user2:
ls ~user2# this FAILS
ls ~user1# this still WORKS
This appears to be known upstream:
http://www.citi.umich.edu/projects/nfsv4/linux/faq/#krb5_006
Bits and pieces of an earlier attempt at a fix:
http://www.spinics.net/lists/linux-nfs/msg34236.html
nfslogin/logout prototype http://www.citi.umich.edu/projects/asci/icsi-alpha/nfs-utils-patches/1.0.10-asci-2/nfs-utils-1.0.10-asci-017-add_nfslogin.dif
Another bug request: https://fedorahosted.org/gss-proxy/ticket/1 (and
linked discussion)
Workarounds:
Unmount/Mount NFS share
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References