Harshit Mogalapalli 937c783aa3 vduse: Validate vq_num in vduse_validate_config() ... 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>		2022-12-28 05:28:11 -05:00
..
iova_domain.c	vduse: Support using userspace pages as bounce buffer	2022-08-11 04:26:08 -04:00
iova_domain.h	vduse: Support using userspace pages as bounce buffer	2022-08-11 04:26:08 -04:00
Makefile
vduse_dev.c	vduse: Validate vq_num in vduse_validate_config()	2022-12-28 05:28:11 -05:00