linux-kernel - Re: [PATCH] block: add check that partition length needs to be aligned with block size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <2023062625-macaw-chant-e515@gregkh>
Date:   Mon, 26 Jun 2023 16:42:36 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Min Li <min15.li@...sung.com>
Cc:     axboe@...nel.dk, willy@...radead.org, hch@....de,
        dlemoal@...nel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block: add check that partition length needs to be
 aligned with block size

On Mon, Jun 26, 2023 at 05:10:21PM +0000, Min Li wrote:
> Before calling add partition or resize partition, there is no check
> on whether the length is aligned with the logical block size.
> If the logical block size of the disk is larger than 512 bytes,
> then the partition size maybe not the multiple of the logical block size,
> and when the last sector is read, bio_truncate() will adjust the bio size,
> resulting in an IO error if the size of the read command is smaller than
> the logical block size.If integrity data is supported, this will also
> result in a null pointer dereference when calling bio_integrity_free.
> 
> Signed-off-by: Min Li <min15.li@...sung.com>

What commit id does this fix?

thanks,

greg k-h