CVE-2018-20854

HIGHNVD 7.87.8—

7.8

An issue was discovered in the Linux kernel before 4.20. drivers/phy/mscc/phy-ocelot-serdes.c has an off-by-one error with a resultant ctrl->phys out-of-bounds read.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 22.2%
KEV: Not listed

Published

July 26, 2019

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
cve@mitrehttps://github.com/torvalds/linux/commit/6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
cve@mitrehttps://security.netapp.com/advisory/ntap-20190905-0002/
cve@mitrehttps://support.f5.com/csp/article/K32450233
cve@mitrehttps://support.f5.com/csp/article/K32450233?utm_source=f5support&amp%3Butm_medium=RSS
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190905-0002/
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K32450233
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K32450233?utm_source=f5support&amp%3Butm_medium=RSS

Weakness Classification(1)

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

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 9× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 03:05 UTCEG score recompute
2026-05-23 03:05 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2018-20854?

CVE-2018-20854 is a high vulnerability published on July 26, 2019. An issue was discovered in the Linux kernel before 4.20. drivers/phy/mscc/phy-ocelot-serdes.c has an off-by-one error with a resultant ctrl->phys out-of-bounds read.

When was CVE-2018-20854 disclosed?

CVE-2018-20854 was first published in the National Vulnerability Database on July 26, 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-2018-20854 actively exploited?

CVE-2018-20854 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20854?

CVE-2018-20854 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2018-20854?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20854, 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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CVE-2018-20854

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20854?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (10)

Frequently asked(5)

Related CVEs(same CWE)