From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
The QP state is limited and declared in enum ib_qp_state,
but ucma user was able to supply any possible (u32) value.
Reported-by: syzbot+0df1ab766f8924b1edba@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/ucma.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 1817dfea8345..3a9d0f5b5881 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1149,6 +1149,9 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file,
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
return -EFAULT;
+ if (cmd.qp_state > IB_QPS_ERR)
+ return -EINVAL;
+
ctx = ucma_get_ctx(file, cmd.id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
--
2.16.2
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
