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Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking

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From: Ingo Molnar
Subject: Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking
Date: Thursday, November 11, 2010 - 12:05 am

* H. Peter Anvin <hpa@zytor.com> wrote:


Yeah - but it happens quite often that the scope of the vulnerability only allows 
absolute addresses. In fact it's a pretty common case: basically most derefs into 
attacker-controlled data pointers are like that.

Thanks,

	Ingo
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[PATCH] kernel: make /proc/kallsyms mode 400 to reduce eas ..., Marcus Meissner, (Thu Nov 4, 3:09 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Tejun Heo, (Thu Nov 4, 3:11 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Thu Nov 4, 4:46 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Marcus Meissner, (Thu Nov 4, 5:29 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Thu Nov 4, 6:58 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Thu Nov 4, 7:11 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Marcus Meissner, (Thu Nov 4, 7:33 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Tejun Heo, (Thu Nov 4, 7:38 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., H. Peter Anvin, (Thu Nov 4, 7:43 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Tejun Heo, (Thu Nov 4, 7:48 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Thu Nov 4, 12:08 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Thu Nov 4, 2:29 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Thu Nov 4, 2:51 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Thu Nov 4, 3:35 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Thu Nov 4, 4:46 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Eugene Teo, (Thu Nov 4, 5:11 pm)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Jesper Juhl, (Thu Nov 4, 5:20 pm)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Frank Rowand, (Thu Nov 4, 7:38 pm)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 1:50 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 1:56 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 2:03 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 2:08 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 2:49 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 4:27 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 4:41 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 4:42 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 4:47 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 4:51 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 4:56 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 5:12 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 5:22 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 5:25 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 5:32 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 5:37 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 5:39 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 5:51 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Willy Tarreau, (Sun Nov 7, 5:55 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Alan Cox, (Sun Nov 7, 8:27 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Andi Kleen, (Sun Nov 7, 11:02 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., H. Peter Anvin, (Sun Nov 7, 11:32 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Ingo Molnar, (Sun Nov 7, 11:29 pm)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Wed Nov 10, 1:53 am)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Jesper Juhl, (Wed Nov 10, 1:58 pm)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., H. Peter Anvin, (Wed Nov 10, 7:51 pm)
Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ..., Ingo Molnar, (Thu Nov 11, 12:05 am)
Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 40 ..., Gilles Espinasse, (Sat Nov 13, 6:06 am)