CVE-2018-16884

HIGHNVD 8.08.0—
EchelonGraph scoreMEDIUM confidence

Score 8.0 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.0Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.0
EG Score
8.0(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity80% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
70.7%
KEV
Not listed

Published

December 18, 2018

Last Modified

November 21, 2024

References (44)

Vendor Advisories for CVE-2018-16884(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-virtual-lts-xenial (4.4.0.145.153) @ xenial2026-05-28ubuntu
ubuntulinux-image-virtual-lts-xenial (4.4.0.144.127) @ trusty2026-05-28ubuntu
ubuntulinux-image-4.18.0-1012-kvm (4.18.0-1012.12) @ cosmic2026-05-28ubuntu
ubuntulinux-image-virtual-hwe-16.04-edge (4.15.0.50.52) @ bionic2026-05-28ubuntu
ubuntulinux-image-azure (4.15.0.1045.32) @ trusty2026-05-28ubuntu
ubuntulinux-image-virtual-hwe-18.04 (4.18.0.20.70) @ bionic2026-05-28ubuntu
redhatkernel-alt-0:4.14.0-115.26.1.el7a2020-07-07redhat
redhatkernel-0:4.18.0-80.15.1.el8_02020-01-22redhat
redhatkernel-rt-0:4.18.0-147.rt24.93.el82019-11-05redhat
redhatkernel-0:4.18.0-147.el82019-11-05redhat
redhatkernel-0:3.10.0-693.58.1.el72019-09-12redhat
redhatkernel-rt-1:3.10.0-693.58.1.rt56.652.el6rt2019-09-11redhat
redhatkernel-rt-0:3.10.0-957.27.2.rt56.940.el72019-07-29redhat
redhatkernel-0:3.10.0-957.27.2.el72019-07-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(13)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 01:34 UTCEG score recompute
  2. 2026-07-22 22:14 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
  5. 2026-07-21 01:17 UTCOSV refresh
  6. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-05 02:27 UTCEPSS rescore
  2. 2026-07-04 06:28 UTCEPSS rescore
  3. 2026-07-03 20:56 UTCOSV refresh
  4. 2026-07-02 16:54 UTCEPSS rescore
  5. 2026-07-01 15:03 UTCEPSS rescore
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  7. 2026-06-30 23:19 UTCEPSS rescore
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  9. 2026-06-29 14:03 UTCEPSS rescore
  10. 2026-06-28 14:04 UTCEPSS rescore
  11. 2026-06-28 04:53 UTCEPSS rescore
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  30. 2026-06-16 17:50 UTCEPSS rescore
  31. 2026-06-15 17:45 UTCEPSS rescore
  32. 2026-06-15 08:43 UTCOSV refresh
  33. 2026-06-14 23:14 UTCEPSS rescore
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  35. 2026-06-13 22:58 UTCEPSS rescore
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  37. 2026-06-12 23:09 UTCEPSS rescore
  38. 2026-06-11 13:57 UTCEPSS rescore
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  45. 2026-06-06 13:45 UTCEPSS rescore
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  60. 2026-05-29 13:41 UTCEPSS rescore
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  62. 2026-05-28 13:42 UTCEPSS rescore
  63. 2026-05-28 00:12 UTCEG score recompute
  64. 2026-05-28 00:12 UTCVendor advisory
  65. 2026-05-28 00:12 UTCGHSA enrichment
  66. 2026-05-27 13:38 UTCEPSS rescore
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  70. 2026-05-26 07:17 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2018-16884?
CVE-2018-16884 is a high vulnerability published on December 18, 2018. A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bcsvcprocess() 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…
When was CVE-2018-16884 disclosed?
CVE-2018-16884 was first published in the National Vulnerability Database on December 18, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-16884 actively exploited?
CVE-2018-16884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-16884?
CVE-2018-16884 has a CVSS v3 base score of 8.0 (NVD).
How do I remediate CVE-2018-16884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16884, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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