V4L/DVB (5076): Cpia.c: buffer overflow

If assigned minor is 10 or greater, terminator will be put beyound the end.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/cpia.c b/drivers/media/video/cpia.c
index 735a52a..78c9699 100644 (file)
--- a/drivers/media/video/cpia.c
+++ b/drivers/media/video/cpia.c
@@ -1350,13 +1350,13 @@ out:
 
 static void create_proc_cpia_cam(struct cam_data *cam)
 {
-       char name[7];
+       char name[5 + 1 + 10 + 1];
        struct proc_dir_entry *ent;
 
        if (!cpia_proc_root || !cam)
                return;
 
-       sprintf(name, "video%d", cam->vdev.minor);
+       snprintf(name, sizeof(name), "video%d", cam->vdev.minor);
 
        ent = create_proc_entry(name, S_IFREG|S_IRUGO|S_IWUSR, cpia_proc_root);
        if (!ent)
@@ -1376,12 +1376,12 @@ static void create_proc_cpia_cam(struct cam_data *cam)
 
 static void destroy_proc_cpia_cam(struct cam_data *cam)
 {
-       char name[7];
+       char name[5 + 1 + 10 + 1];
 
        if (!cam || !cam->proc_entry)
                return;
 
-       sprintf(name, "video%d", cam->vdev.minor);
+       snprintf(name, sizeof(name), "video%d", cam->vdev.minor);
        remove_proc_entry(name, cpia_proc_root);
        cam->proc_entry = NULL;
 }