CVE-2018-16884 Detail

Current Description

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  8.0 HIGH
Vector:  CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score:  6.5 MEDIUM
Vector:  CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/106253 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2019:1873
https://access.redhat.com/errata/RHSA-2019:1891
https://access.redhat.com/errata/RHSA-2019:2696
https://access.redhat.com/errata/RHSA-2019:2730
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:3517
https://access.redhat.com/errata/RHSA-2020:0204
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884 Issue Tracking  Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html Mailing List  Third Party Advisory 
https://patchwork.kernel.org/cover/10733767/ Patch  Vendor Advisory 
https://patchwork.kernel.org/patch/10733769/ Patch  Vendor Advisory 
https://support.f5.com/csp/article/K21430012 Third Party Advisory 
https://usn.ubuntu.com/3932-1/ Third Party Advisory 
https://usn.ubuntu.com/3932-2/ Third Party Advisory 
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3980-2/
https://usn.ubuntu.com/3981-1/
https://usn.ubuntu.com/3981-2/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST   Reference acceptance level Red Hat, Inc.  

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Change History

19 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-16884
NVD Published Date:
12/18/2018
NVD Last Modified:
05/28/2019
Source:
MITRE