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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel s390 Ptrace Flaw Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1030683
SecurityTracker URL:  http://securitytracker.com/id/1030683
CVE Reference:   CVE-2014-3534   (Links to External Site)
Date:  Aug 7 2014
Impact:   Disclosure of system information, Modification of system information, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.15.8
Description:   A vulnerability was reported in the Linux Kernel. A local user can obtain elevated privileges on the target system.

On s390-based systems, the PSW mask check of the PTRACE_POKEUSR_AREA command is incorrect. A local user can exploit this flaw to gain read or write access to kernel memory.

Martin Schwidefsky of IBM reported this vulnerability.

Impact:   A local user can read or write to kernel memory to potentially obtain elevated privileges on the target system.
Solution:   The vendor has issued a fix (3.15.8).

The vendor's advisory is available at:

https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8

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.
Aug 7 2014 (Red Hat Issues Fix) Linux Kernel s390 Ptrace Flaw Lets Local Users Gain Elevated Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



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