CVE-2018-6555

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

September 4, 2018

Last Modified

November 21, 2024

References (24)

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-unsigned-4.15.0-36-lowlatency (4.15.0-36.39~16.04.1) @ xenial2026-05-23ubuntu
ubuntulinux-image-extra-4.4.0-137-generic (4.4.0-137.163) @ xenial2026-05-23ubuntu
ubuntulinux-image-generic-lts-trusty (3.13.0.160.150) @ precise2026-05-23ubuntu
ubuntulinux-image-unsigned-4.15.0-36-lowlatency (4.15.0-36.39) @ bionic2026-05-23ubuntu
ubuntulinux-image-extra-4.4.0-137-generic (4.4.0-137.163~14.04.1) @ trusty2026-05-23ubuntu
ubuntulinux-image-unsigned-4.15.0-1025-azure (4.15.0-1025.26~16.04.1) @ xenial2026-05-23ubuntu
ubuntulinux-image-extra-3.13.0-160-generic (3.13.0-160.210) @ trusty2026-05-23ubuntu

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.

Affected Packages

(7 across 6 ecosystems)
Debian:8(2)
PackageVulnerable rangeFixed inDependents
linux3.16.36-1 ... 3.16.7-ckt9-3~deb8u1~bpo70+1 (60 versions)3.16.59-1—
linux-4.94.9.110-1~deb8u14.9.110-3+deb9u5~deb8u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—4.17.3-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—4.17.3-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—4.17.3-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—4.17.3-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
linux4.9.107-1 ... 4.9.88-1~bpo8+1 (36 versions)4.9.110-3+deb9u5—

Weakness Classification(1)

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

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 8× in last 7d / 33× 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 126 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
  4. 2026-08-17 13:43 UTCEPSS rescore
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  6. 2026-08-16 02:10 UTCEPSS rescore
  7. 2026-08-15 01:26 UTCEPSS rescore
  8. 2026-08-14 21:54 UTCOSV refresh
  9. 2026-08-13 21:56 UTCEPSS rescore
  10. 2026-08-12 13:47 UTCEPSS rescore
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  20. 2026-07-30 16:24 UTCEPSS rescore
  21. 2026-07-30 10:14 UTCOSV refresh
  22. 2026-07-30 01:27 UTCEPSS rescore
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  24. 2026-07-27 14:05 UTCEPSS rescore
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  1. 2026-07-25 14:14 UTCEPSS rescore
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  5. 2026-07-23 14:15 UTCEPSS rescore
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  7. 2026-07-23 01:37 UTCEG score recompute
  8. 2026-07-22 22:17 UTCEG score recompute
  9. 2026-07-22 14:05 UTCEPSS rescore
  10. 2026-07-21 15:22 UTCEPSS rescore
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  19. 2026-07-15 16:55 UTCEPSS rescore
  20. 2026-07-15 01:56 UTCEPSS rescore
  21. 2026-07-13 22:27 UTCEPSS rescore
  22. 2026-07-13 06:10 UTCEPSS rescore
  23. 2026-07-12 19:37 UTCOSV refresh
  24. 2026-07-12 05:43 UTCEPSS rescore
  25. 2026-07-09 19:06 UTCEPSS rescore
  26. 2026-07-08 15:11 UTCEPSS rescore
  27. 2026-07-08 15:11 UTCEPSS rescore
  28. 2026-07-07 13:42 UTCEPSS rescore
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  30. 2026-07-06 16:25 UTCEPSS rescore
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  44. 2026-06-27 03:06 UTCEPSS rescore
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  46. 2026-06-25 13:47 UTCEPSS rescore
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  48. 2026-06-24 14:02 UTCEPSS rescore
  49. 2026-06-24 14:02 UTCEPSS rescore
  50. 2026-06-24 04:29 UTCOSV refresh
  51. 2026-06-23 21:30 UTCEPSS rescore
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  69. 2026-06-13 22:58 UTCEPSS rescore
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  72. 2026-06-11 13:57 UTCEPSS rescore
  73. 2026-06-10 22:16 UTCEPSS rescore
  74. 2026-06-10 13:19 UTCEPSS rescore
  75. 2026-06-08 14:14 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-6555?
CVE-2018-6555 is a high vulnerability published on September 4, 2018. The irdasetsockopt function in net/irda/afirda.c and later in drivers/staging/irda/net/afirda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (iasobject use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.
When was CVE-2018-6555 disclosed?
CVE-2018-6555 was first published in the National Vulnerability Database on September 4, 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-2018-6555 actively exploited?
CVE-2018-6555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 59.4% of all scored CVEs.
What is the CVSS score of CVE-2018-6555?
CVE-2018-6555 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2018-6555?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-6555, 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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