CVE-2018-1094

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 2%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
79.9%
KEV
Not listed

Published

April 2, 2018

Last Modified

November 21, 2024

References (20)

Vendor Advisories for CVE-2018-1094(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-unsigned-4.15.0-24-lowlatency (4.15.0-24.26~16.04.1) @ xenial2026-05-28ubuntu
ubuntulinux-image-unsigned-4.15.0-24-lowlatency (4.15.0-24.26) @ bionic2026-05-28ubuntu
redhatkernel-rt-0:3.10.0-957.rt56.910.el72018-10-30redhat
redhatkernel-alt-0:4.14.0-115.el7a2018-10-30redhat
redhatkernel-0:3.10.0-957.el72018-10-30redhat

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

(4)

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 11× in last 7d / 47× 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. 2026-07-16 16:59 UTCEPSS rescore
  2. 2026-07-16 16:59 UTCEPSS rescore
  3. 2026-07-15 16:55 UTCEPSS rescore
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  18. 2026-07-05 02:27 UTCEPSS rescore
  19. 2026-07-04 10:56 UTCOSV refresh
  20. 2026-07-04 06:28 UTCEPSS rescore
  21. 2026-07-04 06:28 UTCEPSS rescore
  22. 2026-07-02 16:54 UTCEPSS rescore
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  1. 2026-06-30 23:19 UTCEPSS rescore
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  25. 2026-06-16 17:50 UTCEPSS rescore
  26. 2026-06-16 17:50 UTCEPSS rescore
  27. 2026-06-15 22:44 UTCOSV refresh
  28. 2026-06-15 17:45 UTCEPSS rescore
  29. 2026-06-14 23:15 UTCEPSS rescore
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  31. 2026-06-13 22:58 UTCEPSS rescore
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  39. 2026-06-07 15:22 UTCEPSS rescore
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  41. 2026-06-06 13:45 UTCEPSS rescore
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  43. 2026-06-05 22:45 UTCEPSS rescore
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  45. 2026-06-05 06:08 UTCEPSS rescore
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  47. 2026-06-04 13:10 UTCEPSS rescore
  48. 2026-06-02 20:11 UTCEPSS rescore
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  50. 2026-06-01 13:50 UTCEPSS rescore
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  52. 2026-05-31 22:29 UTCEPSS rescore
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  55. 2026-05-29 13:41 UTCEPSS rescore
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  57. 2026-05-28 13:42 UTCEPSS rescore
  58. 2026-05-28 09:50 UTCEG score recompute
  59. 2026-05-28 09:50 UTCVendor advisory
  60. 2026-05-28 09:50 UTCGHSA enrichment
  61. 2026-05-27 13:38 UTCEPSS rescore
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  63. 2026-05-26 13:42 UTCEPSS rescore
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  65. 2026-05-26 07:17 UTCEPSS rescore
  66. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-1094?
CVE-2018-1094 is a medium vulnerability published on April 2, 2018. The ext4fillsuper function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4xattrinode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
When was CVE-2018-1094 disclosed?
CVE-2018-1094 was first published in the National Vulnerability Database on April 2, 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-2018-1094 actively exploited?
CVE-2018-1094 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-1094?
CVE-2018-1094 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2018-1094?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1094, 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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