Linux Kernel GFS2 Rename Null Pointer Dereference May Let Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1024386 |
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SecurityTracker URL: http://securitytracker.com/id/1024386
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CVE Reference:
CVE-2010-2798
(Links to External Site)
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Date: Sep 2 2010
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Impact:
Denial of service via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.6.19-rc1 and later
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Description:
A vulnerability was reported in the Linux Kernel. A local user can cause denial of service conditions. A local user may be able to obtain elevated privileges on the target system.
A local user with write access to a GFS2-mounted file system can perform a specially crafted rename operation to trigger a null pointer dereference and cause denial of service conditions or potentially execute arbitrary code on the target system.
The vulnerability resides in gfs2_dirent_find_space() in 'fs/gfs2/dir.c'.
Grant Diffey of CenITex reported this vulnerability.
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Impact:
A local user may be able to obtain elevated privileges on the target system.
A local user can cause denial of service conditions on the target system.
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Solution:
The vendor has issued a source code fix, available at:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=728a756b8fcd22d80e2dbba8117a8a3aafd3f203
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
Access control error, State error
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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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