linux-ext4 - Re: [PATCH 2/3] ext4: don't read out of bounds when checking for in-inode xattrs

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Date:   Thu, 1 Dec 2016 14:52:21 -0500
From:   Theodore Ts'o <tytso@....edu>
To:     Eric Biggers <ebiggers@...gle.com>
Cc:     linux-ext4@...r.kernel.org,
        Andreas Dilger <adilger.kernel@...ger.ca>
Subject: Re: [PATCH 2/3] ext4: don't read out of bounds when checking for
 in-inode xattrs

On Sat, Nov 26, 2016 at 10:39:45PM -0800, Eric Biggers wrote:
> With i_extra_isize equal to or close to the available space, it was
> possible for us to read past the end of the inode when trying to detect
> or validate in-inode xattrs.  Fix this by checking for the needed extra
> space first.
> 
> This patch shouldn't have any noticeable effect on
> non-corrupted/non-malicious filesystems.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Thanks, applied with the style nits that Andreas pointed out.

		     	       	    	 - Ted
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