linux/drivers/vhost
Michael S. Tsirkin a89db445fb vhost: block speculation of translated descriptors
iovec addresses coming from vhost are assumed to be
pre-validated, but in fact can be speculated to a value
out of range.

Userspace address are later validated with array_index_nospec so we can
be sure kernel info does not leak through these addresses, but vhost
must also not leak userspace info outside the allowed memory table to
guests.

Following the defence in depth principle, make sure
the address is not validated out of node range.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
2019-09-11 15:15:07 -04:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.vringh treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net.c virtio, vhost: fixes, features, performance 2019-07-17 11:26:09 -07:00
scsi.c vhost: scsi: add weight support 2019-05-27 11:08:23 -04:00
test.c vhost/test: fix build for vhost test 2019-09-04 06:21:17 -04:00
test.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vhost.c vhost: block speculation of translated descriptors 2019-09-11 15:15:07 -04:00
vhost.h Revert "vhost: access vq metadata through kernel virtual address" 2019-09-04 07:39:48 -04:00
vringh.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
vsock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482 2019-06-19 17:09:52 +02:00