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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel l2tp_ip6_bind() Race Condition Lets Local Users Deny Service or Gain Elevated Privileges
SecurityTracker Alert ID:  1037965
SecurityTracker URL:  http://securitytracker.com/id/1037965
CVE Reference:   CVE-2016-10200   (Links to External Site)
Date:  Mar 7 2017
Impact:   Denial of service via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the Linux kernel. A local user can cause denial of service conditions on the target system. A local user can obtain elevated privileges on the target system.

A local user can exploit a race condition in l2tp_ip6_bind() in the L2TPv3 IP Encapsulation feature in checking the SOCK_ZAPPED flag to trigger a use-after-free memory error and cause denial of service conditions or potentially gain elevated privileges on the target system.

Impact:   A local user can cause denial of service conditions on the target system.

A local user can obtain elevated privileges on the target system.

Solution:   The vendor has issued a fix (4.8.14).

The vendor advisory is available at:

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14

Vendor URL:  www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14 (Links to External Site)
Cause:   Access control error, State error

Message History:   None.


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