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Category:   OS (Linux)  >   Linux Kernel Vendors:
Linux Kernel do_umount() Privilege Flaw Lets Local Users Deny Service
SecurityTracker Alert ID:  1031180
SecurityTracker URL:
CVE Reference:   CVE-2014-7975   (Links to External Site)
Date:  Nov 8 2014
Impact:   Denial of service via local system, Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.17 and prior
Description:   A vulnerability was reported in the Linux Kernel. A local user can cause denial of service conditions.

A local user that does not have CAP_SYS_ADMIN capability can exploit a flaw in the do_umount() function to change the root filesystem to read-only.

The vulnerability resides in 'fs/namespace.c'.

Impact:   A local user can change the root filesystem to read-only.
Solution:   The vendor has issued a source code fix, available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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