Makes ucma_migrate_id() check the length of the output buffer: this will prevent the function from writing past userspace provided buffer.
Signed-off-by: Yann Droneaud <[email protected]> Link: http://mid.gmane.org/[email protected] --- 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 9e9e899..a155169 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1478,6 +1478,9 @@ static ssize_t ucma_migrate_id(struct ucma_file *new_file, if (in_len < sizeof(cmd)) return -EINVAL; + if (out_len < sizeof(resp)) + return -ENOSPC; + if (copy_from_user(&cmd, inbuf, sizeof(cmd))) return -EFAULT; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
