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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Buffer Overflow in get_matching_model_microcode() Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1032414
SecurityTracker URL:  http://securitytracker.com/id/1032414
CVE Reference:   CVE-2015-2666   (Links to External Site)
Date:  May 28 2015
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.0
Description:   A vulnerability was reported in the Linux Kernel. A local user can obtain elevated privileges on the target system.

A local user can trigger a stack overflow in get_matching_model_microcode() in the Intel early microcode loader to execute arbitrary code with kernel-level privileges on the target system.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Boundary error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 6 2015 (Red Hat Issues Fix) Linux Kernel Buffer Overflow in get_matching_model_microcode() Lets Local Users Gain Elevated Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Aug 6 2015 (Oracle Issues Fix for Oracle Linux) Linux Kernel Buffer Overflow in get_matching_model_microcode() Lets Local Users Gain Elevated Privileges
Oracle has issued a fix for Oracle Linux 7.
Aug 6 2015 (CentOS Issues Fix) Linux Kernel Buffer Overflow in get_matching_model_microcode() Lets Local Users Gain Elevated Privileges
CentOS has issued a fix for CentOS Linux 7.



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