Re: [Xen-devel] [PATCH 15/33] xen/scsiback: Fix a use-after-free

["Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx>]

On Tue, 2017-05-23 at 16:48 -0700, Bart Van Assche wrote:
> scsiback_release_cmd() must not dereference se_cmd->se_tmr_req
> because that memory is freed by target_free_cmd_mem() before
> scsiback_release_cmd() is called. Fix this use-after-free by
> inlining struct scsiback_tmr into struct vscsibk_pend.
> 
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
> Cc: Juergen Gross <jgross@xxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Hannes Reinecke <hare@xxxxxxxx>
> Cc: David Disseldorp <ddiss@xxxxxxx>
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
> ---
>  drivers/xen/xen-scsiback.c | 33 +++++++++------------------------
>  1 file changed, 9 insertions(+), 24 deletions(-)

Applied.


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