CVE-2004-0427

LOWCVSS v2 · 2.12.1—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 2.1 — v2 rates that LOW (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:L/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 0.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
2.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: 2.1Exploit: None knownExposed: 0

A fix is available — apply it.

The do_fork function in Linux 2.4.x before 2.4.26, and 2.6.x before 2.6.6, does not properly decrement the mm_count counter when an error occurs after the mm_struct for a child process has been activated, which triggers a memory leak that allows local users to cause a denial of service (memory exhaustion) via the clone (CLONE_VM) system call.

CVSS v2.0 (legacy)
2.1LOWNVD never assigned a CVSS v3 rating to this CVE
EG Score
2.1(low)
EG Risk
14(Track)
EG Risk 14/100SSVC: 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
Severity21% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 7, 2004

Last Modified

June 16, 2026

References (68)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpatch2004-08-18redhat
redhatkernel-0:2.4.21-15.0.2.EL2004-06-18redhat

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

(6 across 1 ecosystem)
Debian:3.0(6)
PackageVulnerable rangeFixed inDependents
kernel-image-sparc-2.42626woody1—
kernel-patch-2.4.19-mips2.4.19-0.020911.1.woody42.4.19-0.020911.1.woody5—
kernel-source-2.4.16—2.4.16-1woody2—
kernel-source-2.4.172.4.17-1woody32.4.17-1woody4—
kernel-source-2.4.182.4.18-14.32.4.18-14.4—
kernel-source-2.4.192.4.19-4.woody22.4.19-4.woody3—

Weakness Classification(1)

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

All Vendor Advisories

(2)

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 0× in last 7d / 0× 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. 2026-07-26 13:24 UTCEG score recompute▲ 2.10
  2. 2026-07-25 14:11 UTCEPSS rescore
  3. 2026-07-24 14:11 UTCEPSS rescore
  4. 2026-07-23 00:46 UTCEG score recompute
  5. 2026-07-23 00:27 UTCEG score recompute
  6. 2026-07-22 23:50 UTCEG score recompute
  7. 2026-07-22 21:30 UTCEG score recompute
  8. 2026-07-20 17:02 UTCEPSS rescore
  9. 2026-07-19 14:25 UTCEPSS rescore
  10. 2026-07-18 09:59 UTCEPSS rescore
  11. 2026-07-18 09:59 UTCEPSS rescore
  12. 2026-07-16 16:58 UTCEPSS rescore
  13. 2026-07-15 01:55 UTCEPSS rescore
  14. 2026-07-15 01:55 UTCEPSS rescore
  15. 2026-07-13 06:07 UTCEPSS rescore
  16. 2026-07-11 08:22 UTCEPSS rescore
  17. 2026-07-11 08:22 UTCEPSS rescore
  18. 2026-07-08 15:09 UTCEPSS rescore
  19. 2026-07-06 02:19 UTCEPSS rescore
  20. 2026-07-04 06:26 UTCEPSS rescore
  21. 2026-07-02 14:00 UTCEPSS rescore
  22. 2026-06-29 14:02 UTCEPSS rescore
  23. 2026-06-29 14:02 UTCEPSS rescore
  24. 2026-06-28 14:02 UTCEPSS rescore
  25. 2026-06-28 04:52 UTCEPSS rescore
Show 56 more
  1. 2026-06-27 03:04 UTCEPSS rescore
  2. 2026-06-23 21:29 UTCEPSS rescore
  3. 2026-06-22 14:22 UTCEPSS rescore
  4. 2026-06-21 14:52 UTCEPSS rescore
  5. 2026-06-21 01:56 UTCEPSS rescore
  6. 2026-06-19 19:22 UTCEPSS rescore
  7. 2026-06-19 19:22 UTCEPSS rescore
  8. 2026-06-18 17:49 UTCEPSS rescore
  9. 2026-06-18 17:49 UTCEPSS rescore
  10. 2026-06-17 17:49 UTCEPSS rescore
  11. 2026-06-17 17:49 UTCEPSS rescore
  12. 2026-06-16 17:49 UTCEPSS rescore
  13. 2026-06-16 17:49 UTCEPSS rescore
  14. 2026-06-15 17:43 UTCEPSS rescore
  15. 2026-06-14 23:13 UTCEPSS rescore
  16. 2026-06-14 23:13 UTCEPSS rescore
  17. 2026-06-13 22:56 UTCEPSS rescore
  18. 2026-06-12 23:08 UTCEPSS rescore
  19. 2026-06-11 13:55 UTCEPSS rescore
  20. 2026-06-10 22:13 UTCEPSS rescore
  21. 2026-06-10 13:17 UTCEPSS rescore
  22. 2026-06-08 14:13 UTCEPSS rescore
  23. 2026-06-07 15:21 UTCEPSS rescore
  24. 2026-06-06 13:44 UTCEPSS rescore
  25. 2026-06-06 13:44 UTCEPSS rescore
  26. 2026-06-06 13:44 UTCEPSS rescore
  27. 2026-06-05 22:43 UTCEPSS rescore
  28. 2026-06-05 22:43 UTCEPSS rescore
  29. 2026-06-05 06:07 UTCEPSS rescore
  30. 2026-06-04 13:09 UTCEPSS rescore
  31. 2026-06-02 20:10 UTCEPSS rescore
  32. 2026-06-01 13:49 UTCEPSS rescore
  33. 2026-06-01 13:49 UTCEPSS rescore
  34. 2026-05-31 22:28 UTCEPSS rescore
  35. 2026-05-31 16:13 UTCEG score recompute
  36. 2026-05-31 16:13 UTCVendor advisory
  37. 2026-05-31 16:13 UTCGHSA enrichment
  38. 2026-05-31 00:13 UTCEPSS rescore
  39. 2026-05-31 00:13 UTCEPSS rescore
  40. 2026-05-29 13:40 UTCEPSS rescore
  41. 2026-05-29 13:40 UTCEPSS rescore
  42. 2026-05-28 13:42 UTCEPSS rescore
  43. 2026-05-28 13:42 UTCEPSS rescore
  44. 2026-05-28 13:42 UTCEPSS rescore
  45. 2026-05-27 13:37 UTCEPSS rescore
  46. 2026-05-26 13:41 UTCEPSS rescore
  47. 2026-05-26 13:41 UTCEPSS rescore
  48. 2026-05-26 07:16 UTCEPSS rescore
  49. 2026-05-26 07:16 UTCEPSS rescore
  50. 2026-05-24 16:42 UTCEPSS rescore
  51. 2026-05-22 21:15 UTCEPSS rescore
  52. 2026-05-20 22:36 UTCEPSS rescore
  53. 2026-05-20 11:20 UTCEPSS rescore
  54. 2026-05-20 11:20 UTCEPSS rescore
  55. 2026-05-18 21:29 UTCEPSS rescore
  56. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2004-0427?
CVE-2004-0427 is a low vulnerability published on July 7, 2004. The dofork function in Linux 2.4.x before 2.4.26, and 2.6.x before 2.6.6, does not properly decrement the mmcount counter when an error occurs after the mmstruct for a child process has been activated, which triggers a memory leak that allows local users to cause a denial of service (memory…
When was CVE-2004-0427 disclosed?
CVE-2004-0427 was first published in the National Vulnerability Database on July 7, 2004, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2004-0427 actively exploited?
CVE-2004-0427 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 61.5% of all scored CVEs.
How do I remediate CVE-2004-0427?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-0427, 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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