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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Ubuntu Issues Fix) Linux Kernel Race Condition in inotify_handle_event() and vfs_rename() Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1039079
SecurityTracker URL:  http://securitytracker.com/id/1039079
CVE Reference:   CVE-2017-7533   (Links to External Site)
Date:  Aug 4 2017
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): Ubuntu 17.04
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain elevated privileges on the target system.

A local user can exploit a race condition in inotify_handle_event() and vfs_rename() when renaming the target file to overwrite slab data or pointers and execute arbitrary code on the target system with elevated privileges.

Fan Wu and Shixiong Zhao from a research group supervised by Dr. Heming Cui of the Department of Computer Science, The University of Hong Kong, reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

tps://www.ubuntu.com/usn/usn-3377-1

Vendor URL:  www.ubuntu.com/usn/usn-3377-1 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Aug 4 2017 Linux Kernel Race Condition in inotify_handle_event() and vfs_rename() Lets Local Users Gain Elevated Privileges



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