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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel ptrace() Error Handling Flaw Lets Local Users Cause Denial of Service Conditions on the Target System
SecurityTracker Alert ID:  1040806
SecurityTracker URL:  http://securitytracker.com/id/1040806
CVE Reference:   CVE-2018-1000199   (Links to External Site)
Updated:  May 1 2018
Original Entry Date:  May 1 2018
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 invoke the modify_user_hw_breakpoint() function to trigger an error handling flaw and cause the kernel to crash.

Systems built with hardware breakpoint support (CONFIG_HAVE_HW_BREAKPOINT) are affected.

Andy Lutomirski reported this vulnerability.

Impact:   A local user can cause denial of service conditions on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/torvalds/linux/commit/f67b15037a7a50c57f72e69a6d59941ad90a0f0f

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

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 9 2018 (Ubuntu Issues Fix) Linux Kernel ptrace() Error Handling Flaw Lets Local Users Cause Denial of Service Conditions on the Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 17.10.
May 9 2018 (Ubuntu Issues Fix) Linux Kernel ptrace() Error Handling Flaw Lets Local Users Cause Denial of Service Conditions on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.
May 9 2018 (Oracle Issues Fix for Oracle Linux) Linux Kernel ptrace() Error Handling Flaw Lets Local Users Cause Denial of Service Conditions on the Target System
Oracle has issued a fix for Oracle Linux 7.
May 24 2018 (Oracle Issues Fix for Oracle Linux) Linux Kernel ptrace() Error Handling Flaw Lets Local Users Cause Denial of Service Conditions on the Target System
Oracle has issued a fix for Oracle Linux 7.



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