{"id":"CVE-2018-1000200","details":"The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).","modified":"2026-04-16T06:20:52.588269381Z","published":"2018-06-05T13:29:00.297Z","related":["SUSE-SU-2018:2092-1"],"references":[{"type":"WEB","url":"https://usn.ubuntu.com/3752-1/"},{"type":"WEB","url":"https://usn.ubuntu.com/3752-2/"},{"type":"WEB","url":"https://usn.ubuntu.com/3752-3/"},{"type":"ADVISORY","url":"https://marc.info/?l=linux-kernel&m=152460926619256"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/cve-2018-1000200"},{"type":"ADVISORY","url":"https://marc.info/?l=linux-kernel&m=152400522806945"},{"type":"ADVISORY","url":"http://seclists.org/oss-sec/2018/q2/67"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/104397"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2948"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000200.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.14"}]},{"events":[{"introduced":"0"},{"last_affected":"4.15"}]},{"events":[{"introduced":"0"},{"last_affected":"4.16"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}