Linux Kernel execve() Bug May Let Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1022960 |
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SecurityTracker URL: http://securitytracker.com/id/1022960
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CVE Reference:
CVE-2009-2848
(Links to External Site)
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Date: Sep 30 2009
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Impact:
Root access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 2.6.32-rc1
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Description:
A vulnerability was reported in the Linux Kernel. A local user may be able to obtain elevated privileges on the target system.
The execve() function does not properly clear the current->clear_child_tid pointer. A local user can exploit this by issuing a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled to trigger a memory corruption error.
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Impact:
A local user may be able to obtain elevated privileges on the target system.
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Solution:
The vendor has issued a fix, available at:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=9c8a8228d0827e0d91d28527209988f672f97d28
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
Access control error
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Underlying OS:
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Tue, 29 Sep 2009 23:18:06 -0400
Subject: Linux Kernel
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CVE-2009-2848
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