We should return -EINVAL if the user specifies LSM_FLAG_SINGLE without
supplying a valid lsm_ctx struct buffer.
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Paul Moore <paul@paul-moore.com>
/*
* Only flag supported is LSM_FLAG_SINGLE
*/
- if (flags != LSM_FLAG_SINGLE)
+ if (flags != LSM_FLAG_SINGLE || !uctx)
return -EINVAL;
- if (uctx && copy_from_user(&lctx, uctx, sizeof(lctx)))
+ if (copy_from_user(&lctx, uctx, sizeof(lctx)))
return -EFAULT;
/*
* If the LSM ID isn't specified it is an error.