CVE-2018-1000200 Null dereference in n/a

What is CVE-2018-1000200?

CVE-2018-1000200 is a medium-severity vulnerability in Linux kernel, published on 5 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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).

Weakness: CWE-476

Which versions are affected by CVE-2018-1000200?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2018-1000200?

Apply the vendor's patch.

Is CVE-2018-1000200 being exploited?

There is no known exploitation of CVE-2018-1000200 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-1000200, GHSA-qrgv-ph7p-j565, UBUNTU-CVE-2018-1000200.