Linux Kernel Bug in load_elf_library Lets Local Users Deny Service
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SecurityTracker Alert ID: 1013602 |
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SecurityTracker URL: http://securitytracker.com/id/1013602
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CVE Reference:
CAN-2005-0749
(Links to External Site)
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Date: Mar 30 2005
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Impact:
Denial of service via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.4 prior to 2.4.30-rc2; 2.6 prior to 2.6.11.6
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Description:
A vulnerability was reported in the Linux kernel ELF loader. A local user can cause denial of service conditions.
A local user can invoke the load_elf_library to modify 'elf_phdata', causing the wrong memory to be freed.
The flaw resides in '/fs/binfmt_elf.c'.
Yichen Xie discovered this vulnerability.
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Impact:
A local user can cause the kernel to crash.
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Solution:
The vendor has issued a fixed version (2.4.30-rc2, 2.6.11.6), available at:
http://kernel.org/
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
State 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: Wed, 30 Mar 2005 00:14:31 -0500
Subject: [none]
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> CAN-2005-0749 : ELF loader may kfree wrong memory.
--
> Potential DOS in load_elf_library
> Yichen Xie <yxie@cs.stanford.edu> points out that load_elf_library can
> modify `elf_phdata' before freeing it.
>
> CAN-2005-0749 is assigned to this issue.
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