The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.
www.securityfocus.com/bid/103316
access.redhat.com/errata/RHSA-2018:3083
access.redhat.com/errata/RHSA-2018:3096
bugzilla.kernel.org/show_bug.cgi?id=199037
lists.debian.org/debian-lts-announce/2018/05/msg00000.html
usn.ubuntu.com/3910-1/
usn.ubuntu.com/3910-2/
www.debian.org/security/2018/dsa-4187
www.debian.org/security/2018/dsa-4188