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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Ubuntu Issues Fix) Linux Kernel Cache Invalidation Bug Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1041772
SecurityTracker URL:  http://securitytracker.com/id/1041772
CVE Reference:   CVE-2018-17182   (Links to External Site)
Date:  Oct 3 2018
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Ubuntu 18.04 LTS
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain elevated privileges on the target system.

A local user can run a specially crafted application to trigger an overflow in the cache invalidation optimization and execute arbitrary code on the target system with elevated privileges.

The original advisory is available at:

https://bugs.chromium.org/p/project-zero/issues/detail?id=1664

Additional information is available at:

https://googleprojectzero.blogspot.com/2018/09/a-cache-invalidation-bug-in-linux.html

Jann Horn of Google Project Zero 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:

https://usn.ubuntu.com/usn/usn-3777-1

Vendor URL:  usn.ubuntu.com/usn/usn-3777-1 (Links to External Site)
Cause:   Boundary error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 1 2018 Linux Kernel Cache Invalidation Bug Lets Local Users Gain Elevated Privileges



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