Bug 68896 - mm doesn't change ownership properly of SysV semaphores
mm doesn't change ownership properly of SysV semaphores
Product: Red Hat Public Beta
Classification: Retired
Component: mm (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Nalin Dahyabhai
Brian Brock
Depends On: 68895
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Reported: 2002-07-15 15:56 EDT by Jonathan Kamens
Modified: 2007-04-18 12:44 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2002-07-31 04:51:38 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
patch to set perms of semaphores in mm (822 bytes, patch)
2002-07-15 15:57 EDT, Jonathan Kamens
no flags Details | Diff

  None (edit)
Description Jonathan Kamens 2002-07-15 15:56:56 EDT
When mm is told to change the ownership or modes of a shared memory object, it
doesn't properly update the ownership or mode of semaphores (assuming that it is
compiled with semaphores enabled).  I'll attach a patch.
Comment 1 Jonathan Kamens 2002-07-15 15:57:36 EDT
Created attachment 65464 [details]
patch to set perms of semaphores in mm
Comment 2 Nalin Dahyabhai 2002-07-24 15:05:48 EDT
Fixing for 1.1.3-8 and later.
Comment 3 Jonathan Kamens 2002-07-26 10:15:10 EDT
The author of mm pointed out a problem in my patch.  When I wrote "i <=
sizeof(sems)/sizeof(*sems)", the "<=" should have been "<".  Please fix this if
you retained the bug when integrating my patch into your package.

Also, he said that my fix will be in mm 1.2.0, although I don't know if/when
that'll be released.
Comment 4 Mark J. Cox (Product Security) 2002-07-31 04:51:38 EDT
An errata has been issued which should help the problem described in this bug report. 
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen 
this bug report if the solution does not work for you.


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