Dan Carpenter 51f6302f81 vdpa: check that offsets are within bounds ...

commit 3ed21c1451 upstream.

In this function "c->off" is a u32 and "size" is a long.  On 64bit systems
if "c->off" is greater than "size" then "size - c->off" is a negative and
we always return -E2BIG.  But on 32bit systems the subtraction is type
promoted to a high positive u32 value and basically any "c->len" is
accepted.

Fixes: 4c8cf31885 ("vhost: introduce vDPA-based backend")
Reported-by: Xie Yongji <xieyongji@bytedance.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211208103337.GA4047@kili
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-12-22 09:30:51 +01:00

..

iotlb.c

vhost: Fix documentation

2020-09-24 05:54:36 -04:00

Kconfig

vhost_vdpa: implement IRQ offloading in vhost_vdpa

2020-08-05 11:08:42 -04:00

Makefile

vhost: introduce vDPA-based backend

2020-04-02 10:41:40 -04:00

net.c

vhost_net: fix OoB on sendmsg() failure.

2021-09-22 12:27:58 +02:00

scsi.c

vhost scsi: fix error return code in vhost_scsi_set_endpoint()

2020-12-30 11:54:00 +01:00

test.c

tools/virtio: Add --reset

2020-06-22 12:34:21 -04:00

test.h

tools/virtio: Add --reset

2020-06-22 12:34:21 -04:00

vdpa.c

vdpa: check that offsets are within bounds

2021-12-22 09:30:51 +01:00

vhost.c

vhost: Fix the calculation in vhost_overflow()

2021-08-26 08:35:42 -04:00

vhost.h

vhost: add helper to check if a vq has been setup

2020-11-15 17:30:54 -05:00

vringh.c

vringh: Use wiov->used to check for read/write desc order

2021-09-03 10:09:27 +02:00

vsock.c

vhost/vsock: fix incorrect used length reported to the guest

2021-12-01 09:19:09 +01:00