diff options
| author | Shiraz Saleem <shiraz.saleem@intel.com> | 2016-08-23 02:16:37 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-08-24 18:21:51 +0300 |
| commit | 5dfd5e5e3bc68ab3912acc712c8180942094fc69 (patch) | |
| tree | 259952755056eeba2376710d697a848a387e8dcb /drivers/infiniband/hw/i40iw/i40iw_cm.c | |
| parent | cff069b78c21559f427c3fefe9ef3294e3dec094 (diff) | |
| download | linux-5dfd5e5e3bc68ab3912acc712c8180942094fc69.tar.xz | |
i40iw: Add missing NULL check for MPA private data
Add NULL check for pdata and pdata->addr before the memcpy in
i40iw_form_cm_frame(). This fixes a NULL pointer de-reference
which occurs when the MPA private data pointer is NULL. Also
only copy pdata->size bytes in the memcpy to prevent reading
past the length of the private data buffer provided by upper layer.
Fixes: f27b4746f378 ("i40iw: add connection management code")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_cm.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_cm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c index 5026dc79978a..64343985e0b7 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_cm.c +++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c @@ -535,8 +535,8 @@ static struct i40iw_puda_buf *i40iw_form_cm_frame(struct i40iw_cm_node *cm_node, buf += hdr_len; } - if (pd_len) - memcpy(buf, pdata->addr, pd_len); + if (pdata && pdata->addr) + memcpy(buf, pdata->addr, pdata->size); atomic_set(&sqbuf->refcount, 1); |