[libvirt] [PATCH] qemu: fix use after free

[Daniel Veillard]

On Tue, Jul 31, 2012 at 08:05:46AM -0600, Eric Blake wrote:
> Detected by Coverity.
> 
> * src/qemu/qemu_hotplug.c (qemuDomainAttachHostDevice): Avoid
> double free of usb on failure.
> ---
>  src/qemu/qemu_hotplug.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
> index ba841e9..ceffe22 100644
> --- a/src/qemu/qemu_hotplug.c
> +++ b/src/qemu/qemu_hotplug.c
> @@ -1170,6 +1170,7 @@ int qemuDomainAttachHostDevice(struct qemud_driver *driver,
> 
>          if (usbDeviceListAdd(list, usb) < 0) {
>              usbFreeDevice(usb);
> +            usb = NULL:
>              goto cleanup;
>          }
> 

  ACK,

Daniel

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