Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
From: Jann Horn <hidden>
Date: 2014-05-10 07:16:19
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On Fri, May 09, 2014 at 12:19:16PM -0700, Josh Triplett wrote:
+ if (port > 65535)
+ return 0;
+ switch (count) {[...]
+ case 4: + if (__put_user(inl(port), buf) < 0) + return -EFAULT;
What if I attempt a four-byte read at 65535? That would access four out-of-bounds bytes, right?
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