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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel ACPI Driver Bug Lets Local Users Obtain Potentially Sensitive Information and Bypass ASLR
SecurityTracker Alert ID:  1040319
SecurityTracker URL:  http://securitytracker.com/id/1040319
CVE Reference:   CVE-2018-5750   (Links to External Site)
Date:  Feb 2 2018
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the Linux kernel. A local user can obtain potentially sensitive information. A local user can bypass security restrictions.

A local user can submit a specially crafted SBS HC printk system call to trigger a flaw in the acpi_smbus_hc_add() function in 'drivers/acpi/sbshc.c' and obtain potentially sensitive address information and potentially bypass kernel address space layout randomization (KASLR) security protection on the target system.

Impact:   A local user can obtain potentially sensitive information on the target system.

A local user can bypass security controls on the target system.

Solution:   The vendor has issued a source code fix, available at:

https://patchwork.kernel.org/patch/10174835/

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.
Apr 28 2018 (Ubuntu Issues Fix) Linux Kernel ACPI Driver Bug Lets Local Users Obtain Potentially Sensitive Information and Bypass ASLR
Ubuntu has issued a fix for Ubuntu Linux 16.04 LTS.
Jul 3 2018 (Ubuntu Issues Fix) Linux Kernel ACPI Driver Bug Lets Local Users Obtain Potentially Sensitive Information and Bypass ASLR
Ubuntu has issued a fix for Ubuntu Linux 17.10.
Aug 10 2018 (Oracle Issues Fix for Oracle Linux) Linux Kernel ACPI Driver Bug Lets Local Users Obtain Potentially Sensitive Information and Bypass ASLR
Oracle has issued a fix for Oracle Linux 6.
Aug 10 2018 (Oracle Issues Fix for Oracle Linux) Linux Kernel ACPI Driver Bug Lets Local Users Obtain Potentially Sensitive Information and Bypass ASLR
Oracle has issued a fix for Oracle Linux 7.



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