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AUSCERT External Security Bulletin Redistribution
ESB-2008.0512 -- [Solaris]
Certain Solaris 10 patches may cause systems using SVM with
4-way mirrors to core dump on SVM commands
19 May 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: Solaris Volume Manager (SVM)
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Denial of Service
Access: Existing Account
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-237804-1
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Solution Type: Sun Alert
Solution 237804 : Certain Solaris 10 patches may cause systems
using SVM with 4-way mirrors to core dump on SVM commands
Bug ID: 6677820
Product
Solaris 10 Operating System
Date of Workaround Release: 16-May-2008
SA Document Body
Certain Solaris 10 patches may cause systems using SVM with 4-way mirrors
to core dump on SVM commands
1. Impact
Solaris 10 systems utilizing 4-way mirrors and with patch 124256-02 or
later installed (SPARC) or with 126257-03 or later installed (x86) may
experience an application core dump when one of the Solaris Volume
Manager (SVM) sub-mirrors is detached from a 4-way mirror. This
condition leaves SVM replicas corrupted, and the use of any subsequent
SVM commands (meta commands) may also cause an application to core
dump.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 10 with patch 124256-02 through 124256-06 or with patch
127127-09 through 127127-11
x86 Platform
* Solaris 10 with patch 126257-03 through 126257-07 or with patch
127719-03 through 127719-05 or with patch 127128-04 through
127128-11
Notes:
1. Solaris 8 and 9 are not impacted by this issue.
2. Only systems utilizing SVM 4-way mirrors are impacted by this
issue. Systems with only 2 or 3 mirrors are not impacted by this
issue.
3. Symptoms
An assertion failure from metadetach(1M) is followed by a core dump,
as in the following example:
# metadetach d10 d100
d10: submirror d100 is detached
...
metadetach: Abort
Abort (core dumped)
Subsequent SVM commands such as metastat(1M) may also cause a core
dump after this point.
4. Workaround
Binary relief is available through normal support channels for the
following releases:
SPARC Platform
* Solaris 10
x86 Platform
* Solaris 10
Note: If this issue has already occurred and the system has corrupted
replicas, the replicas will need to be recreated. Removing the
affected patches listed in section 2 or installing binary relief will
not remedy the replica corruption.
To remove/recreate the corrupted replicas, follow the steps below:
1. Take appropriate data backups before destroying replicas.
2. Destroy the SVM replicas.
3. Backout the affected patches listed in section 2 above or install
the binary relief.
4. Reboot the system, so that changes to the binary (md_mirror) take
effect.
5. Recreate SVM replicas.
Notes:
1. For systems using 4 way mirrors which have not yet experienced
this issue, it is advised to back out the affected patches listed
in section 2 or install the binary relief to avoid being impacted.
2. Systems installed with Solaris 10 5/08 will not allow a back out
of the affected patches listed in section 2, as they are
pre-installed in the initial system installation/upgrade.
5. Resolution
A final resolution is pending completion.
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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