linux-kernel - Re: [PATCH v4] ntfs : fix shift-out-of-bounds in ntfs

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Message-ID: <2023081621-mosaic-untwist-a786@gregkh>
Date:   Wed, 16 Aug 2023 21:15:52 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Manas Ghandat <ghandatmanas@...il.com>
Cc:     Linux-kernel-mentees@...ts.linuxfoundation.org, anton@...era.com,
        linkinjeon@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-ntfs-dev@...ts.sourceforge.net,
        syzbot+4768a8f039aa677897d0@...kaller.appspotmail.com
Subject: Re: [PATCH v4] ntfs : fix shift-out-of-bounds in ntfs_iget

On Sun, Aug 13, 2023 at 11:29:49AM +0530, Manas Ghandat wrote:
> Currently there is not check for ni->itype.compressed.block_size when
> a->data.non_resident.compression_unit is present and NInoSparse(ni) is
> true. Added the required check to calculation of block size.
> 
> Signed-off-by: Manas Ghandat <ghandatmanas@...il.com>
> Reported-by: syzbot+4768a8f039aa677897d0@...kaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=4768a8f039aa677897d0
> Fix-commit-ID: upstream f40ddce88593482919761f74910f42f4b84c004b

What is this last tag for?  That's a kernel release version, what can be
done with that?

confused,

greg k-h