CVE-2018-1000204

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 2%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel heap pages to the userspace. This has been fixed upstream in https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the Nero user manual suggests doing chmod o+r+w /dev/sg* to make the devices accessible. NOTE: third parties dispute the relevance of this report, noting that the requirement for an attacker to have both the CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it "virtually impossible to exploit.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
77.5%
KEV
Not listed

Published

June 26, 2018

Last Modified

November 21, 2024

References (26)

Vendor Advisories for CVE-2018-1000204(1)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-unsigned-4.15.0-1022-azure (4.15.0-1022.22~16.04.1) @ xenial2026-05-28ubuntu
ubuntulinux-image-extra-4.4.0-130-generic (4.4.0-130.156~14.04.1) @ trusty2026-05-28ubuntu
ubuntulinux-image-unsigned-4.15.0-33-lowlatency (4.15.0-33.36) @ bionic2026-05-28ubuntu
ubuntulinux-image-extra-3.13.0-157-generic (3.13.0-157.207) @ trusty2026-05-28ubuntu
ubuntulinux-image-extra-4.4.0-130-generic (4.4.0-130.156) @ xenial2026-05-28ubuntu
ubuntulinux-image-unsigned-4.15.0-33-lowlatency (4.15.0-33.36~16.04.1) @ xenial2026-05-28ubuntu
redhatkernel-alt-0:4.14.0-115.el7a2018-10-30redhat

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.

Additional Vendor Advisories

(6)

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 10× 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.

  1. 2026-07-16 16:59 UTCEPSS rescore
  2. 2026-07-16 16:59 UTCEPSS rescore
  3. 2026-07-15 16:55 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-15 01:56 UTCEPSS rescore
  6. 2026-07-15 01:56 UTCEPSS rescore
  7. 2026-07-13 22:26 UTCEPSS rescore
  8. 2026-07-13 22:26 UTCEPSS rescore
  9. 2026-07-12 05:43 UTCEPSS rescore
  10. 2026-07-11 08:24 UTCEPSS rescore
  11. 2026-07-09 19:06 UTCEPSS rescore
  12. 2026-07-08 15:11 UTCEPSS rescore
  13. 2026-07-07 13:42 UTCEPSS rescore
  14. 2026-07-06 16:24 UTCEPSS rescore
  15. 2026-07-06 16:24 UTCEPSS rescore
  16. 2026-07-06 02:20 UTCEPSS rescore
  17. 2026-07-06 02:20 UTCEPSS rescore
  18. 2026-07-05 02:27 UTCEPSS rescore
  19. 2026-07-04 06:28 UTCEPSS rescore
  20. 2026-07-04 06:28 UTCEPSS rescore
  21. 2026-07-04 05:56 UTCOSV refresh
  22. 2026-07-02 16:54 UTCEPSS rescore
  23. 2026-07-01 15:03 UTCEPSS rescore
  24. 2026-06-30 23:19 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
Show 63 more
  1. 2026-06-29 14:03 UTCEPSS rescore
  2. 2026-06-28 14:04 UTCEPSS rescore
  3. 2026-06-28 04:53 UTCEPSS rescore
  4. 2026-06-28 04:53 UTCEPSS rescore
  5. 2026-06-27 03:06 UTCEPSS rescore
  6. 2026-06-25 13:47 UTCEPSS rescore
  7. 2026-06-24 14:02 UTCEPSS rescore
  8. 2026-06-24 14:02 UTCEPSS rescore
  9. 2026-06-23 21:30 UTCEPSS rescore
  10. 2026-06-23 21:30 UTCEPSS rescore
  11. 2026-06-22 14:23 UTCEPSS rescore
  12. 2026-06-22 14:23 UTCEPSS rescore
  13. 2026-06-21 14:54 UTCEPSS rescore
  14. 2026-06-21 14:54 UTCEPSS rescore
  15. 2026-06-21 01:57 UTCEPSS rescore
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  17. 2026-06-19 19:23 UTCEPSS rescore
  18. 2026-06-19 19:23 UTCEPSS rescore
  19. 2026-06-18 17:50 UTCEPSS rescore
  20. 2026-06-17 17:50 UTCEPSS rescore
  21. 2026-06-16 17:50 UTCEPSS rescore
  22. 2026-06-15 17:45 UTCEPSS rescore
  23. 2026-06-15 17:43 UTCOSV refresh
  24. 2026-06-14 23:14 UTCEPSS rescore
  25. 2026-06-14 23:14 UTCEPSS rescore
  26. 2026-06-13 22:58 UTCEPSS rescore
  27. 2026-06-13 22:57 UTCEPSS rescore
  28. 2026-06-12 23:09 UTCEPSS rescore
  29. 2026-06-12 23:09 UTCEPSS rescore
  30. 2026-06-11 13:57 UTCEPSS rescore
  31. 2026-06-10 22:15 UTCEPSS rescore
  32. 2026-06-10 13:19 UTCEPSS rescore
  33. 2026-06-08 14:14 UTCEPSS rescore
  34. 2026-06-08 14:14 UTCEPSS rescore
  35. 2026-06-07 15:22 UTCEPSS rescore
  36. 2026-06-07 15:22 UTCEPSS rescore
  37. 2026-06-06 13:45 UTCEPSS rescore
  38. 2026-06-06 13:45 UTCEPSS rescore
  39. 2026-06-05 22:44 UTCEPSS rescore
  40. 2026-06-05 22:44 UTCEPSS rescore
  41. 2026-06-05 06:08 UTCEPSS rescore
  42. 2026-06-05 06:08 UTCEPSS rescore
  43. 2026-06-04 13:10 UTCEPSS rescore
  44. 2026-06-04 13:10 UTCEPSS rescore
  45. 2026-06-02 20:11 UTCEPSS rescore
  46. 2026-06-02 20:11 UTCEPSS rescore
  47. 2026-06-01 13:49 UTCEPSS rescore
  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-05-31 22:28 UTCEPSS rescore
  50. 2026-05-31 00:14 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
  52. 2026-05-29 13:41 UTCEPSS rescore
  53. 2026-05-28 13:42 UTCEPSS rescore
  54. 2026-05-28 13:42 UTCEPSS rescore
  55. 2026-05-28 06:20 UTCEG score recompute
  56. 2026-05-28 06:20 UTCVendor advisory
  57. 2026-05-28 06:19 UTCGHSA enrichment
  58. 2026-05-27 13:38 UTCEPSS rescore
  59. 2026-05-27 13:38 UTCEPSS rescore
  60. 2026-05-26 13:42 UTCEPSS rescore
  61. 2026-05-26 07:17 UTCEPSS rescore
  62. 2026-05-26 07:17 UTCEPSS rescore
  63. 2026-05-24 13:51 UTCOSV refresh

Frequently asked(5)

What is CVE-2018-1000204?
CVE-2018-1000204 is a medium vulnerability published on June 26, 2018. Linux Kernel version 3.18 to 4.16 incorrectly handles an SGIO ioctl on /dev/sg0 with dxferdirection=SGDXFERFROMDEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel heap pages to the userspace. This has been fixed upstream in…
When was CVE-2018-1000204 disclosed?
CVE-2018-1000204 was first published in the National Vulnerability Database on June 26, 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-2018-1000204 actively exploited?
CVE-2018-1000204 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-1000204?
CVE-2018-1000204 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2018-1000204?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1000204, 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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