diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-03-17 02:46:09 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-17 14:28:54 -0400 |
| commit | 46aa92d1ba162b4b3d6b7102440e459d4e4ee255 (patch) | |
| tree | 98dd50e4b0420724c04fe00b188155fcb41a4476 /drivers/isdn/hisax/nj_u.c | |
| parent | 3d84fa98aca7f05f7010022bc45acb1b50326332 (diff) | |
vhost/net: fix heads usage of ubuf_info
ubuf info allocator uses guest controlled head as an index,
so a malicious guest could put the same head entry in the ring twice,
and we will get two callbacks on the same value.
To fix use upend_idx which is guaranteed to be unique.
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hisax/nj_u.c')
0 files changed, 0 insertions, 0 deletions