diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-06-25 17:29:46 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-07-07 14:06:22 +0300 |
| commit | c38e39c378f46f00ce922dd40a91043a9925c28d (patch) | |
| tree | a5286110beeea3f5fef0c86fb44535d91402ea3b /drivers/vhost/vhost.c | |
| parent | 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff) | |
| download | op-kernel-dev-c38e39c378f46f00ce922dd40a91043a9925c28d.zip op-kernel-dev-c38e39c378f46f00ce922dd40a91043a9925c28d.tar.gz | |
vhost-net: fix use-after-free in vhost_net_flush
vhost_net_ubuf_put_and_wait has a confusing name:
it will actually also free it's argument.
Thus since commit 1280c27f8e29acf4af2da914e80ec27c3dbd5c01
"vhost-net: flush outstanding DMAs on memory change"
vhost_net_flush tries to use the argument after passing it
to vhost_net_ubuf_put_and_wait, this results
in use after free.
To fix, don't free the argument in vhost_net_ubuf_put_and_wait,
add an new API for callers that want to free ubufs.
Acked-by: Asias He <asias@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.c')
0 files changed, 0 insertions, 0 deletions
