937c783aa3
Add a limit to 'config->vq_num' which is user controlled data which comes from an vduse_ioctl to prevent large memory allocations. Micheal says - This limit is somewhat arbitrary. However, currently virtio pci and ccw are limited to a 16 bit vq number. While MMIO isn't it is also isn't used with lots of VQs due to current lack of support for per-vq interrupts. Thus, the 0xffff limit on number of VQs corresponding to a 16-bit VQ number seems sufficient for now. This is found using static analysis with smatch. Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Message-Id: <20221128155717.2579992-1-harshit.m.mogalapalli@oracle.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> |
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| Makefile | ||
| iova_domain.c | ||
| iova_domain.h | ||
| vduse_dev.c | ||