| commit | 34e29ce754c02bb6b3bdd244fbb85033460feaff | |
| author | Prasad J Pandit <pjp@fedoraproject.org> | |
| Thu, 29 Sep 2016 18:57:33 +0000 (30 00:27 +0530) | ||
| committer | Jason Wang <jasowang@redhat.com> | |
| Wed, 26 Oct 2016 01:57:59 +0000 (26 09:57 +0800) | ||
| tree | fa2f1228043f4ea33ba3b7e9de9be0f65147fde2 | treesnapshot (tar.gz zip) |
| parent | ede0cbeb7892bdf4a19128853a3a3c61a17fb068 | commitdiff |
net: pcnet: check rx/tx descriptor ring length
The AMD PC-Net II emulator has set of control and status(CSR)
registers. Of these, CSR76 and CSR78 hold receive and transmit
descriptor ring length respectively. This ring length could range
from 1 to 65535. Setting ring length to zero leads to an infinite
loop in pcnet_rdra_addr() or pcnet_transmit(). Add check to avoid it.
Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The AMD PC-Net II emulator has set of control and status(CSR)
registers. Of these, CSR76 and CSR78 hold receive and transmit
descriptor ring length respectively. This ring length could range
from 1 to 65535. Setting ring length to zero leads to an infinite
loop in pcnet_rdra_addr() or pcnet_transmit(). Add check to avoid it.
Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
| hw/net/pcnet.c | diffblobblamehistory |