SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Infinite Loop in perf_callchain_user_64() Lets Local Users Cause Denial of Service Conditions on the Target System
SecurityTracker Alert ID:  1033728
SecurityTracker URL:  http://securitytracker.com/id/1033728
CVE Reference:   CVE-2015-6526   (Links to External Site)
Date:  Oct 2 2015
Impact:   Denial of service 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 create a specially crafted stack layout to trigger a flaw in the perf_callchain_user_64() function and cause the target process to enter an infinite loop, consuming excessive CPU resources. The target process cannot be killed.

ppc64 kernels that support perf are affected.

Impact:   A local user can consume excessive CPU resources on the target system. The system must be restarted to return to normal operations.
Solution:   The vendor has issued a fix (4.0.2).

The vendor's advisory is available at:

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2

Vendor URL:  www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2 (Links to External Site)
Cause:   State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 20 2015 (Red Hat Issues Fix) Linux Kernel Infinite Loop in perf_callchain_user_64() Lets Local Users Cause Denial of Service Conditions on the Target System
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC