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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-1731-1 linux security update
Debian DLA Debian DLA DLA-1731-2 linux regression update
Debian DLA Debian DLA DLA-1771-1 linux-4.9 security update
EUVD EUVD EUVD-2018-8674 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.
Ubuntu USN Ubuntu USN USN-3932-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3932-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3980-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3980-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3981-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3981-2 Linux kernel (HWE) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.001}

epss

{'score': 0.00078}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-05T10:32:54.149Z

Reserved: 2018-09-11T00:00:00

Link: CVE-2018-16884

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-12-18T22:29:04.713

Modified: 2024-11-21T03:53:31.757

Link: CVE-2018-16884

cve-icon Redhat

Severity : Important

Publid Date: 2018-11-27T00:00:00Z

Links: CVE-2018-16884 - Bugzilla

cve-icon OpenCVE Enrichment

No data.