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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1032417
SecurityTracker URL:  http://securitytracker.com/id/1032417
CVE Reference:   CVE-2015-2922   (Links to External Site)
Date:  May 28 2015
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.19.6
Description:   A vulnerability was reported in the Linux Kernel. A remote user on the local network can cause denial of service conditions on the target system.

A remote user on the local network can send a specially crafted Router Advertisement message to exploit a flaw in the ndisc_router_discovery() function in 'net/ipv6/ndisc.c' and set the IPv6 hop limit to a value that is too low.

Systems built with IPv6 networking support (CONFIG_IPV6) are affected.

Impact:   A remote user on the local network can cause denial of service conditions.
Solution:   The vendor has issued a fix (3.19.6) [in April 2015].

The vendor's advisory is available at:

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.6

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

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jul 16 2015 (CentOS Issues Fix) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
CentOS has issued a fix for CentOS 6.
Jul 31 2015 (Oracle Issues Fix for Oracle Linux) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
Oracle has issued a fix for Oracle Linux 6 and 7.
Aug 6 2015 (Red Hat Issues Fix for Red Hat Enterprise MRG) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise MRG.
Aug 6 2015 (Red Hat Issues Fix) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Aug 6 2015 (Oracle Issues Fix for Oracle Linux) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
Oracle has issued a fix for Oracle Linux 7.
Aug 6 2015 (CentOS Issues Fix) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
CentOS has issued a fix for CentOS Linux 7.
Sep 12 2016 (Google Issues Fix for Google Android) Linux Kernel IPv6 ndisc_router_discovery() Bug Lets Remote Users Deny Service
Google has issued a fix for Google Android.



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