Re: [PATCH] KVM: Enhance the coalesced_mmio_write() parameter toavoid stack buffer overflow

[Avi Kivity]

On 04/12/2010 04:57 AM, wzt.wzt@xxxxxxxxx wrote:
> coalesced_mmio_write() is not check the len value, if len is negative,
> memcpy(ring->coalesced_mmio[ring->last].data, val, len); will cause
> stack buffer overflow.
>
>    

How can len be negative?  It can only be between 1 and 8.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/