Re: capable open_port() check wrong for kmem

From: David Wagner (
Date: Tue Dec 10 2002 - 00:45:09 EST

carbonated beverage wrote:
> I found that I can't open /dev/kmem O_RDONLY. The open_mem
>and open_kmem calls (open_port()) in drivers/char/mem.c checks for
> Is there a possibility of splitting that off into a read and

Read-only access to /dev/kmem is probably enough to get root access
(maybe you can snoop root's password, for instance). This would make
the power of the two capabilities roughly equivalent, so if this is true,
I'm not sure I understand the point of splitting them in two this way.
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This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:16 EST