Re: [Qemu-devel] [PATCH for-2.0 22/47] qcow2: Validate refcount table offset

[Max Reitz]

On 26.03.2014 13:05, Stefan Hajnoczi wrote:
> From: Kevin Wolf <address@hidden>
>
> The end of the refcount table must not exceed INT64_MAX so that integer
> overflows are avoided.
>
> Also check for misaligned refcount table. Such images are invalid and
> probably the result of data corruption. Error out to avoid further
> corruption.
>
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
>   block/qcow2.c              | 33 +++++++++++++++++++++++++++++++++
>   tests/qemu-iotests/080     | 13 +++++++++++++
>   tests/qemu-iotests/080.out | 10 ++++++++++
>   3 files changed, 56 insertions(+)

Reviewed-by: Max Reitz <address@hidden>