Noexec on Details... https://www.deepreflect.net/tags/noexec/ Recent content in Noexec on Details... Hugo en-US Copyright © 2003 - 2026 Leonardo Rizzi Tue, 30 Jun 2026 03:28:29 +0200 Securing /dev/shm https://www.deepreflect.net/2009/12/02/securing-devshm/ Wed, 02 Dec 2009 07:28:16 +0000 http://blog.deepreflect.net/?p=781 <p>Edit your /etc/fstab:</p> <p>`</p> <h1 id="vi-etcfstab">vi /etc/fstab</h1> <p>`</p> <p>change:</p> <p><code>none /dev/shm tmpfs defaults,rw 0 0</code></p> <p>to</p> <p><code>none /dev/shm tmpfs defaults,nosuid,noexec,rw 0 0</code></p> <p>Remount /dev/shm:</p> <p>`</p> <h1 id="mount--o-remount-devshm">mount -o remount /dev/shm</h1> <p>`</p> <p>You can test it runnig a script on /dev/shm, if you get &ldquo;permission denied&rdquo; it is fine!</p> Edit your /etc/fstab:

`

vi /etc/fstab

`

change:

none /dev/shm tmpfs defaults,rw 0 0

to

none /dev/shm tmpfs defaults,nosuid,noexec,rw 0 0

Remount /dev/shm:

`

mount -o remount /dev/shm

`

You can test it runnig a script on /dev/shm, if you get “permission denied” it is fine!

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