CVE-2018-20976

HIGHNVD 7.87.8—

7.8

An issue was discovered in fs/xfs/xfs_super.c in the Linux kernel before 4.18. A use after free exists, related to xfs_fs_fill_super failure.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 44.3%
KEV: Not listed

Published

August 19, 2019

Last Modified

November 21, 2024

References (34)

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-virtual-lts-xenial (4.4.0.165.173) @ xenial	2026-05-27	ubuntu
ubuntu	linux-image-virtual-hwe-16.04 (4.15.0.65.85) @ xenial	2026-05-27	ubuntu
redhat	kernel-0:3.10.0-327.85.1.el7	2020-03-03	redhat
redhat	kernel-rt-1:3.10.0-693.64.1.rt56.662.el6rt	2020-02-26	redhat
redhat	kernel-0:3.10.0-693.64.1.el7	2020-02-25	redhat
redhat	kernel-0:3.10.0-862.48.1.el7	2020-02-19	redhat
redhat	kernel-0:3.10.0-514.72.1.el7	2020-01-21	redhat

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.

CWE-416Use After Free

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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.

2026-06-17 17:50 UTCEPSS rescore
2026-06-17 17:50 UTCEPSS rescore
2026-06-16 17:50 UTCEPSS rescore
2026-06-16 17:50 UTCEPSS rescore
2026-06-15 17:45 UTCEPSS rescore
2026-06-14 23:15 UTCEPSS rescore
2026-06-14 23:14 UTCEPSS rescore
2026-06-14 20:13 UTCOSV refresh
2026-06-13 22:58 UTCEPSS rescore
2026-06-12 23:09 UTCEPSS rescore
2026-06-12 23:09 UTCEPSS rescore
2026-06-11 13:57 UTCEPSS rescore
2026-06-10 22:16 UTCEPSS rescore
2026-06-10 13:19 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore

Show 19 more

2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 15:47 UTCEG score recompute
2026-05-27 15:47 UTCVendor advisory
2026-05-27 15:47 UTCGHSA enrichment
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore

Frequently asked(5)

What is CVE-2018-20976?

CVE-2018-20976 is a high vulnerability published on August 19, 2019. An issue was discovered in fs/xfs/xfssuper.c in the Linux kernel before 4.18. A use after free exists, related to xfsfsfillsuper failure.

When was CVE-2018-20976 disclosed?

CVE-2018-20976 was first published in the National Vulnerability Database on August 19, 2019, 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-2018-20976 actively exploited?

CVE-2018-20976 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20976?

CVE-2018-20976 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2018-20976?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20976, 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.

Dependency Blast Radius

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CVE-2018-20976

Published

Last Modified

References (34)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20976?

CVE-2018-20976

Published

Last Modified

References (34)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20976?

Same vendor

Same CWE

CVE-2018-20976

📅 Published

🔄 Last Modified

🔗 References (34)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20976?

CVE-2018-20976

📅 Published

🔄 Last Modified

🔗 References (34)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20976?

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