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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Ubuntu Issues Fix) Linux Kernel packet_set_ring() Race Condition Lets Local Users Obtain Root Privileges
SecurityTracker Alert ID:  1039163
SecurityTracker URL:  http://securitytracker.com/id/1039163
CVE Reference:   CVE-2017-1000111   (Links to External Site)
Date:  Aug 15 2017
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Ubuntu 16.04 LTS
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain root privileges on the target system.

A local user with CAP_NET_RAW permissions that can create PF_PACKET sockets can trigger a race condition and use-after-free memory error in packet_set_ring() to execute arbitrary code on the target system with root privileges.

The vendor was notified on August 3, 2017.

Impact:   A local user can obtain root privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3385-1

Vendor URL:  www.ubuntu.com/usn/usn-3385-1 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Aug 11 2017 Linux Kernel packet_set_ring() Race Condition Lets Local Users Obtain Root Privileges



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