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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Integer Overflow in LZ4_decompress_generic() May Let Remote Users Execute Arbitrary Code in Certain Cases
SecurityTracker Alert ID:  1030491
SecurityTracker URL:  http://securitytracker.com/id/1030491
CVE Reference:   CVE-2014-4611   (Links to External Site)
Date:  Jun 30 2014
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.11 and later
Description:   A vulnerability was reported in the Linux Kernel. A remote user may be able to cause arbitrary code to be executed on the target system in certain limited cases.

A remote user can create a specially crafted LZ4 formatted file that, when processed by the target application, will trigger an integer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target application.

The vulnerability resides in the LZ4_decompress_generic() in 'lib/lz4/lz4_decompress.c'.

A file that is much larger than the LZ4 file format limit of 8 MB blocks is required to trigger the flaw.

Only 32-bit systems are practically affected.

Don A. Bailey from Lab Mouse Security and Ludwig Strigeus reported this vulnerability.

Impact:   A remote user can create a file that, when processed by the target application, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix (3.14.9, 3.15.2).
Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  

Message History:   None.


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