linux-ext4 - Re: [PATCH] filefrag: avoid temporary buffer overflow

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Message-ID: <20180330033513.GF3790@thunk.org>
Date:   Thu, 29 Mar 2018 23:35:13 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Andreas Dilger <adilger@...ger.ca>
Cc:     linux-ext4@...r.kernel.org,
        Andreas Dilger <andreas.dilger@...el.com>
Subject: Re: [PATCH] filefrag: avoid temporary buffer overflow

On Thu, Mar 29, 2018 at 12:36:54PM -0600, Andreas Dilger wrote:
> If an unknown flag is present in a FIEMAP extent, it is printed as a
> hex value into a temporary buffer before adding it to the flags.  If
> that unknown flag is over 0xfff then it will overflow the temporary
> buffer.
> 
> Reported-by: Sarah Liu <wei3.liu@...el.com>
> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-10335
> Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>

It's applied now.  Apologies for dropping it earlier.

     	     	   	     	 	  - Ted