Only the return value of copy_to_user() is checked in con_get_unimap(). Do the same for put_user() of the count too. Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- drivers/tty/vt/consolemap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c index 831450f2bfd1..92b5dddb00d9 100644 --- a/drivers/tty/vt/consolemap.c +++ b/drivers/tty/vt/consolemap.c @@ -813,7 +813,8 @@ int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, console_unlock(); if (copy_to_user(list, unilist, min(ect, ct) * sizeof(*unilist))) ret = -EFAULT; - put_user(ect, uct); + if (put_user(ect, uct)) + ret = -EFAULT; kvfree(unilist); return ret ? ret : (ect <= ct) ? 0 : -ENOMEM; } -- 2.36.1
