Bug 144137 - (IT_62045) CAN-2004-1235 isec.pl do_brk() privilege escalation
CAN-2004-1235 isec.pl do_brk() privilege escalation
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: kernel (Show other bugs)
i386 Linux
medium Severity high
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Assigned To: Jim Paradis
Brian Brock
: Security
Depends On:
  Show dependency treegraph
Reported: 2005-01-04 14:39 EST by Josh Bressers
Modified: 2013-08-05 21:11 EDT (History)
6 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2005-01-21 10:37:27 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Josh Bressers 2005-01-04 14:39:40 EST
isec.pl reported a missing down() on mmap_sem semaphore whilst calling do_brk;
so if do_brk() sleeps on a kmalloc it may get into a VMA list race - leading to
results similar to the do_brk exploit.
Comment 2 Josh Bressers 2005-01-04 14:49:25 EST
Attachment 109343 [details]
Contains the patch for this issue.
Comment 3 Mark J. Cox (Product Security) 2005-01-10 04:29:46 EST
Removing embargo
Comment 4 Jim Paradis 2005-01-17 15:50:46 EST
A fix for this problem has also been committed to the RHEL2.1 U7
patch pool (in kernel version 2.4.9-e.59)
Comment 5 Josh Bressers 2005-01-21 10:37:27 EST
An advisory 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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