Eugenio Pérez 7f574e92e4 vhost: Check docket sk_family instead of call getname ...

[ Upstream commit 42d84c8490 ]

Doing so, we save one call to get data we already have in the struct.

Also, since there is no guarantee that getname use sockaddr_ll
parameter beyond its size, we add a little bit of security here.
It should do not do beyond MAX_ADDR_LEN, but syzbot found that
ax25_getname writes more (72 bytes, the size of full_sockaddr_ax25,
versus 20 + 32 bytes of sockaddr_ll + MAX_ADDR_LEN in syzbot repro).

Fixes: 3a4d5c94e9 ("vhost_net: a kernel-level virtio server")
Reported-by: syzbot+f2a62d07a5198c819c7b@syzkaller.appspotmail.com
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-03-11 07:53:08 +01:00

..

Kconfig

vhost: split out vringh Kconfig

2016-08-02 16:54:28 +03:00

Kconfig.vringh

vhost: split out vringh Kconfig

2016-08-02 16:54:28 +03:00

Makefile

VSOCK: Add Makefile and Kconfig

2016-08-02 02:57:30 +03:00

net.c

vhost: Check docket sk_family instead of call getname

2020-03-11 07:53:08 +01:00

scsi.c

vhost: scsi: add weight support

2019-08-25 10:51:42 +02:00

test.c

vhost/test: fix build for vhost test

2019-09-16 08:19:33 +02:00

test.h

…

vhost.c

vhost: make sure log_num < in_num

2019-09-16 08:19:34 +02:00

vhost.h

vhost: introduce vhost_exceeds_weight()

2019-08-25 10:51:41 +02:00

vringh.c

vringh: update for virtio 1.0 APIs

2014-12-15 23:49:28 +02:00

vsock.c

vhost/vsock: accept only packets with the right dst_cid

2020-01-04 13:41:12 +01:00