Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:  xfrm: clear trailing padding in build_polexpire()  build_expire() clears the trailing padding bytes of struct xfrm_user_expire after setting the hard field via memset_after(), but the analogous function build_polexpire() does not do this for struct xfrm_user_polexpire.  The padding bytes after the __u8 hard field are left uninitialized from the heap allocation, and are then sent to userspace via netlink multicast to XFRMNLGRP_EXPIRE listeners, leaking kernel heap memory contents.  Add the missing memset_after() call, matching build_expire().