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CVE Vulnerabilities

CVE-2018-1000200

NULL Pointer Dereference

Published: Jun 05, 2018 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4.9 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
5.5 MODERATE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2018-1000200
CWEhttps://cwe.mitre.org/data/definitions/476.html

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 processs final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reapers unmap_page_range() since the vmas VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Linux_kernelLinux4.14 (including)4.14 (including)
Linux_kernelLinux4.15 (including)4.15 (including)
Linux_kernelLinux4.16 (including)4.16 (including)
Red Hat Enterprise Linux 7RedHatkernel-alt-0:4.14.0-115.el7a*
LinuxUbuntubionic*
LinuxUbuntuesm-infra/bionic*
LinuxUbuntuupstream*
Linux-awsUbuntubionic*
Linux-awsUbuntuesm-infra/bionic*
Linux-awsUbuntuupstream*
Linux-azureUbuntubionic*
Linux-azureUbuntuesm-infra/bionic*
Linux-azureUbuntuesm-infra/xenial*
Linux-azureUbuntuupstream*
Linux-azureUbuntuxenial*
Linux-azure-edgeUbuntuupstream*
Linux-azure-edgeUbuntuxenial*
Linux-euclidUbuntuupstream*
Linux-floUbuntutrusty*
Linux-floUbuntuupstream*
Linux-floUbuntuxenial*
Linux-gcpUbuntubionic*
Linux-gcpUbuntuesm-infra/bionic*
Linux-gcpUbuntuesm-infra/xenial*
Linux-gcpUbuntuupstream*
Linux-gcpUbuntuxenial*
Linux-gkeUbuntuupstream*
Linux-gkeUbuntuxenial*
Linux-goldfishUbuntutrusty*
Linux-goldfishUbuntuupstream*
Linux-goldfishUbuntuxenial*
Linux-grouperUbuntutrusty*
Linux-grouperUbuntuupstream*
Linux-hweUbuntuesm-infra/xenial*
Linux-hweUbuntuupstream*
Linux-hweUbuntuxenial*
Linux-hwe-edgeUbuntuesm-infra/xenial*
Linux-hwe-edgeUbuntuupstream*
Linux-hwe-edgeUbuntuxenial*
Linux-kvmUbuntubionic*
Linux-kvmUbuntuesm-infra/bionic*
Linux-kvmUbuntuupstream*
Linux-lts-trustyUbuntuupstream*
Linux-lts-utopicUbuntutrusty*
Linux-lts-utopicUbuntuupstream*
Linux-lts-vividUbuntutrusty*
Linux-lts-vividUbuntuupstream*
Linux-lts-wilyUbuntutrusty*
Linux-lts-wilyUbuntuupstream*
Linux-lts-xenialUbuntuupstream*
Linux-maguroUbuntutrusty*
Linux-maguroUbuntuupstream*
Linux-makoUbuntutrusty*
Linux-makoUbuntuupstream*
Linux-makoUbuntuxenial*
Linux-mantaUbuntutrusty*
Linux-mantaUbuntuupstream*
Linux-oemUbuntubionic*
Linux-oemUbuntuesm-infra/bionic*
Linux-oemUbuntuupstream*
Linux-raspi2Ubuntubionic*
Linux-raspi2Ubuntuupstream*
Linux-snapdragonUbuntuupstream*

Potential Mitigations

References

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