CVE-2018-5803

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

June 12, 2018

Last Modified

November 21, 2024

References (52)

Vendor Advisories for CVE-2018-5803(2)

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

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-extra-4.4.0-127-generic (4.4.0-127.153~14.04.1) @ trusty2026-05-28ubuntu
ubuntulinux-image-extra-3.13.0-153-generic (3.13.0-153.203) @ trusty2026-05-28ubuntu
ubuntulinux-image-4.13.0-1031-oem (4.13.0-1031.35) @ xenial2026-05-28ubuntu
ubuntulinux-image-4.4.0-1093-snapdragon (4.4.0-1093.98) @ xenial2026-05-28ubuntu
ubuntulinux-image-generic-lts-trusty (3.13.0.153.143) @ precise2026-05-28ubuntu
ubuntulinux-image-extra-4.4.0-127-generic (4.4.0-127.153) @ xenial2026-05-28ubuntu
ubuntulinux-image-4.13.0-46-lowlatency (4.13.0-46.51) @ artful2026-05-28ubuntu
redhatkernel-rt-1:3.10.0-693.46.1.rt56.639.el6rt2019-03-26redhat
redhatkernel-alt-0:4.14.0-115.el7a2018-10-30redhat
redhatkernel-0:3.10.0-957.el72018-10-30redhat
redhatkernel-rt-0:3.10.0-957.rt56.910.el72018-10-30redhat
redhatkernel-0:2.6.32-754.el62018-06-19redhat

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

(10)

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 14× in last 7d / 45× 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.

Showing the most recent 100 of 103 total refreshes for this CVE.

  1. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-25 14:14 UTCEPSS rescore
  3. 2026-07-25 14:14 UTCEPSS rescore
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  6. 2026-07-23 14:15 UTCEPSS rescore
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  8. 2026-07-23 01:36 UTCEG score recompute
  9. 2026-07-22 22:17 UTCEG score recompute
  10. 2026-07-22 14:05 UTCEPSS rescore
  11. 2026-07-21 15:22 UTCEPSS rescore
  12. 2026-07-21 11:17 UTCOSV refresh
  13. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-09 19:06 UTCEPSS rescore
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  8. 2026-07-06 02:20 UTCEPSS rescore
  9. 2026-07-05 02:27 UTCEPSS rescore
  10. 2026-07-04 06:28 UTCEPSS rescore
  11. 2026-07-04 06:28 UTCEPSS rescore
  12. 2026-07-04 06:26 UTCOSV refresh
  13. 2026-07-01 15:03 UTCEPSS rescore
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  15. 2026-06-30 23:20 UTCEPSS rescore
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  21. 2026-06-27 03:06 UTCEPSS rescore
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  27. 2026-06-23 21:30 UTCEPSS rescore
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  35. 2026-06-19 19:23 UTCEPSS rescore
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  37. 2026-06-18 17:50 UTCEPSS rescore
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  40. 2026-06-16 17:50 UTCEPSS rescore
  41. 2026-06-16 17:50 UTCEPSS rescore
  42. 2026-06-15 18:13 UTCOSV refresh
  43. 2026-06-15 17:45 UTCEPSS rescore
  44. 2026-06-14 23:15 UTCEPSS rescore
  45. 2026-06-14 23:15 UTCEPSS rescore
  46. 2026-06-13 22:58 UTCEPSS rescore
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  49. 2026-06-11 13:57 UTCEPSS rescore
  50. 2026-06-10 22:16 UTCEPSS rescore
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  68. 2026-05-29 13:41 UTCEPSS rescore
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  70. 2026-05-28 13:42 UTCEPSS rescore
  71. 2026-05-28 06:43 UTCEG score recompute
  72. 2026-05-28 06:43 UTCVendor advisory
  73. 2026-05-28 06:43 UTCGHSA enrichment
  74. 2026-05-27 13:38 UTCEPSS rescore
  75. 2026-05-26 13:42 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-5803?
CVE-2018-5803 is a medium vulnerability published on June 12, 2018. In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "sctpmakechunk()" function (net/sctp/smmake_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.
When was CVE-2018-5803 disclosed?
CVE-2018-5803 was first published in the National Vulnerability Database on June 12, 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-2018-5803 actively exploited?
CVE-2018-5803 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.3% of all scored CVEs.
What is the CVSS score of CVE-2018-5803?
CVE-2018-5803 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2018-5803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-5803, 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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