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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel shmem_fallocate() Bug Lets Local Users Deny Service
SecurityTracker Alert ID:  1030450
SecurityTracker URL:  http://securitytracker.com/id/1030450
CVE Reference:   CVE-2014-4171   (Links to External Site)
Date:  Jun 18 2014
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the Linux Kernel. A local user can cause denial of service conditions.

A local user can trigger a flaw in shmem_fallocate() to cause the kernel to hang.

The original advisory is available at:

http://ozlabs.org/~akpm/mmots/broken-out/shmem-fix-faulting-into-a-hole-while-its-punched.patch

Hugh Dickins from Google reported this vulnerability.

Impact:   A local user can cause the target system to hang.
Solution:   A patch is available at:

http://www.spinics.net/lists/mm-commits/msg104782.html

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 28 2015 (Red Hat Issues Fix) Linux Kernel shmem_fallocate() Bug Lets Local Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



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