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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
SecurityTracker Alert ID:  1034701
SecurityTracker URL:  http://securitytracker.com/id/1034701
CVE Reference:   CVE-2016-0728   (Links to External Site)
Date:  Jan 19 2016
Impact:   Execution of arbitrary code via local system, Root access via local system
Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 3.8 and later
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain root privileges on the target system.

A local user can trigger a reference count overflow in the join_session_keyring() function in 'security/keys/process_keys.c' to execute arbitrary code on the target system with kernel-level privileges.

The Perception Point research team reported this vulnerability.

Impact:   A local user can execute arbitrary code to obtain root privileges on the target system.
Solution:   No upstream solution was available at the time of this entry.
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.
Jan 19 2016 (Ubuntu Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS.
Jan 19 2016 (Ubuntu Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Ubuntu has issued a fix for Ubuntu Linux 15.04.
Jan 19 2016 (Ubuntu Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Ubuntu has issued a fix for Ubuntu Linux 15.10.
Jan 21 2016 (Oracle Issues Fix for Oracle Linux) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Oracle has issued a fix for Oracle Linux 6 and 7 Unbreakable.
Jan 21 2016 (Oracle Issues Fix for Oracle Linux) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Oracle has issued a fix for Oracle Linux 6 and 7 Unbreakable.
Jan 26 2016 (CentOS Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
CentOS has issued a fix for CentOS 7.
Jan 26 2016 (Red Hat Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Jan 26 2016 (Red Hat Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Jan 26 2016 (Red Hat Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 6 and 7.
Feb 3 2016 (Red Hat Issues Fix) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.1.
Feb 18 2016 (Oracle Issues Fix for Oracle Linux) Linux Kernel Session Keyring Reference Count Overflow Bug Lets Local Users Obtain Root Privileges
Oracle has issued a fix for Oracle Linux 7.



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