CVE-2018-1000200

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
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).
Overview
  • CVE ID
  • CVE-2018-1000200
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-06-05T13:29:00
  • Last Modified Date
  • 2018-10-31T10:30:41
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:4.14:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:4.15:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:4.16:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a Mitigation Patch Vendor Advisory
https://access.redhat.com/security/cve/cve-2018-1000200 Third Party Advisory
http://seclists.org/oss-sec/2018/q2/67 Mailing List Third Party Advisory
https://marc.info/?l=linux-kernel&m=152460926619256 Mailing List Third Party Advisory
https://marc.info/?l=linux-kernel&m=152400522806945 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/104397 Third Party Advisory VDB Entry
https://usn.ubuntu.com/3752-2/
https://usn.ubuntu.com/3752-1/
https://usn.ubuntu.com/3752-3/
https://access.redhat.com/errata/RHSA-2018:2948
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-1000200
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000200
History
Created Old Value New Value Data Type Notes
2022-05-10 17:54:33 Added to TrackCVE
2022-12-03 07:12:15 2018-06-05T13:29Z 2018-06-05T13:29:00 CVE Published Date updated
2022-12-03 07:12:15 2018-10-31T10:30:41 CVE Modified Date updated
2022-12-03 07:12:15 Modified Vulnerability Status updated