What is CVE-2018-16884?

CVE-2018-16884 is a High severity Linux kernel vulnerability with a CVSS score of 8.0 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2018-16884 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2018-16884?

CVE-2018-16884 has a CVSS score of 8.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2018-16884?

No patch is currently available for CVE-2018-16884. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2018-16884 actively exploited?

CVE-2018-16884 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2018-16884

High

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.

Package Linux Kernel

Published 2018-12-18

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

8.0

out of 10

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-416

CVE-2018-16884 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2018-16884 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Securityfocus
http://www.securityfocus.com/bid/106253

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2019:1873

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:1891

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:2696

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:2730

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:3309

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:3517

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2020:0204

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html

Mailing List Third Party Advisory
Support
https://support.f5.com/csp/article/K21430012

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3932-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3932-2/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3980-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3980-2/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3981-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3981-2/

Third Party Advisory
Oracle
https://www.oracle.com/security-alerts/cpuApr2021.html

Third Party Advisory
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
Patch
Kernel patch commit
https://patchwork.kernel.org/cover/10733767/
Patch
Kernel patch commit
https://patchwork.kernel.org/patch/10733769/
Patch

Details

CVE ID CVE-2018-16884

Severity High

CVSS score 8.0 / 10

CVSS version 3.1

Published 2018-12-18

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2018-16884?

CVE-2018-16884 is a High severity Linux kernel vulnerability with a CVSS score of 8.0 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2018-16884 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2018-16884?

CVE-2018-16884 has a CVSS score of 8.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2018-16884?

No patch is currently available for CVE-2018-16884. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2018-16884 actively exploited?

No — CVE-2018-16884 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →