[PATCH-for-9.0 v2 0/4] hw/virtio: Protect from more DMA re-entrancy bugs

[Philippe Mathieu-Daudé]

Fixes for CVE-2024-3446.

Gerd suggested to use the transport guard to protect the
device from DMA re-entrancy abuses.

Since v1:
- Take a DeviceState argument, not VirtIODevice, so it
  works seamlessly with CCW devices (actually the original
  code from Gerd).
- Build and test :>

I'll send a PR with these patches later today.

Regards,

Phil.

Philippe Mathieu-Daudé (4):
  hw/virtio: Introduce virtio_bh_new_guarded() helper
  hw/display/virtio-gpu: Protect from DMA re-entrancy bugs
  hw/char/virtio-serial-bus: Protect from DMA re-entrancy bugs
  hw/virtio/virtio-crypto: Protect from DMA re-entrancy bugs

 include/hw/virtio/virtio.h  |  7 +++++++
 hw/char/virtio-serial-bus.c |  3 +--
 hw/display/virtio-gpu.c     |  6 ++----
 hw/virtio/virtio-crypto.c   |  4 ++--
 hw/virtio/virtio.c          | 10 ++++++++++
 5 files changed, 22 insertions(+), 8 deletions(-)

-- 
2.41.0