CVE-2004-2731

MEDIUMCVSS v2 · 4.44.4—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.4 — v2 rates that MEDIUM (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:M/Au:N/C:P/I:P/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 0.6% 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
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS v2: 4.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative buffer size to the copyin function.

CVSS v2.0 (legacy)
4.4MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.4(low)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity44% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

December 31, 2004

Last Modified

June 16, 2026

References (18)

Affected Packages

(20 across 1 ecosystem)
Debian:3.1(20)
PackageVulnerable rangeFixed inDependents
hostap-modules-i3861:0.3.7-1, 1:0.3.7-1sarge1, 1:0.3.7-1sarge21:0.3.7-1sarge3—
i2c1:2.9.1-1, 1:2.9.1-1sarge11:2.9.1-1sarge2—
kernel-image-2.4.27-alpha2.4.27-10 ... 2.4.27-10sarge5 (6 versions)2.4.27-10sarge6—
kernel-image-2.4.27-arm2.4.27-2 ... 2.4.27-2sarge5 (6 versions)2.4.27-2sarge6—
kernel-image-2.4.27-i3862.4.27-10 ... 2.4.27-10sarge5 (6 versions)2.4.27-10sarge6—
kernel-image-2.4.27-ia642.4.27-10 ... 2.4.27-10sarge5 (6 versions)2.4.27-10sarge6—
kernel-image-2.4.27-m68k2.4.27-3 ... 2.4.27-3sarge5 (6 versions)2.4.27-3sarge6—
kernel-image-2.4.27-s3902.4.27-2 ... 2.4.27-2sarge5 (6 versions)2.4.27-2sarge6—
kernel-image-2.4.27-sparc2.4.27-9 ... 2.4.27-9sarge5 (6 versions)2.4.27-9sarge6—
kernel-image-speakup-i3862.4.27-1.1, 2.4.27-1.1sarge1, 2.4.27-1.1sarge2, 2.4.27-1.1sarge3, 2.4.27-1.1sarge42.4.27-1.1sarge5—
kernel-latest-2.4-alpha101, 101sarge1101sarge3—
kernel-latest-2.4-i386101, 101sarge1101sarge2—
kernel-latest-2.4-s3902.4.27-1, 2.4.27-1sarge12.4.27-1sarge2—
kernel-latest-2.4-sparc42, 42sarge1, 42sarge242sarge3—
kernel-patch-2.4.27-mips2.4.27-10.040815-1 ... 2.4.27-10.sarge4.040815-2 (6 versions)2.4.27-10.sarge4.040815-3—
kernel-patch-powerpc-2.4.272.4.27-10 ... 2.4.27-10sarge5 (6 versions)2.4.27-10sarge6—
kernel-source-2.4.272.4.27-10 ... 2.4.27-10sarge6 (7 versions)2.4.27-10sarge7—
mindi-kernel2.4.27-2, 2.4.27-2sarge1, 2.4.27-2sarge2, 2.4.27-2sarge3, 2.4.27-2sarge42.4.27-2sarge5—
pcmcia-modules-2.4.27-i3863.2.5+2, 3.2.5+2sarge13.2.5+2sarge2—
systemimager3.2.3-6, 3.2.3-6sarge1, 3.2.3-6sarge2, 3.2.3-6sarge3, 3.2.3-6sarge43.2.3-6sarge5—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 0× in last 7d / 2× 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. 2026-08-08 16:30 UTCEPSS rescore
  2. 2026-08-05 19:11 UTCEPSS rescore
  3. 2026-07-26 13:25 UTCEG score recompute▲ 4.40
  4. 2026-07-25 14:11 UTCEPSS rescore
  5. 2026-07-24 14:11 UTCEPSS rescore
  6. 2026-07-23 00:47 UTCEG score recompute
  7. 2026-07-23 00:27 UTCEG score recompute
  8. 2026-07-22 23:51 UTCEG score recompute
  9. 2026-07-22 21:31 UTCEG score recompute
  10. 2026-07-18 09:59 UTCEPSS rescore
  11. 2026-07-18 09:59 UTCEPSS rescore
  12. 2026-07-15 16:53 UTCEPSS rescore
  13. 2026-07-15 01:55 UTCEPSS rescore
  14. 2026-07-15 01:55 UTCEPSS rescore
  15. 2026-07-13 22:24 UTCEPSS rescore
  16. 2026-07-13 06:07 UTCEPSS rescore
  17. 2026-07-13 06:07 UTCEPSS rescore
  18. 2026-07-11 08:22 UTCEPSS rescore
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  20. 2026-07-08 15:09 UTCEPSS rescore
  21. 2026-07-06 02:19 UTCEPSS rescore
  22. 2026-07-06 02:19 UTCEPSS rescore
  23. 2026-07-02 14:00 UTCEPSS rescore
  24. 2026-07-01 15:01 UTCEPSS rescore
  25. 2026-06-29 14:02 UTCEPSS rescore
Show 61 more
  1. 2026-06-29 14:02 UTCEPSS rescore
  2. 2026-06-28 04:52 UTCEPSS rescore
  3. 2026-06-27 03:04 UTCEPSS rescore
  4. 2026-06-25 13:46 UTCEPSS rescore
  5. 2026-06-24 14:01 UTCEPSS rescore
  6. 2026-06-23 21:29 UTCEPSS rescore
  7. 2026-06-22 14:22 UTCEPSS rescore
  8. 2026-06-22 14:22 UTCEPSS rescore
  9. 2026-06-21 01:56 UTCEPSS rescore
  10. 2026-06-19 19:22 UTCEPSS rescore
  11. 2026-06-18 17:49 UTCEPSS rescore
  12. 2026-06-18 17:49 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-17 17:49 UTCEPSS rescore
  15. 2026-06-16 17:49 UTCEPSS rescore
  16. 2026-06-16 17:49 UTCEPSS rescore
  17. 2026-06-15 17:44 UTCEPSS rescore
  18. 2026-06-14 23:13 UTCEPSS rescore
  19. 2026-06-14 23:13 UTCEPSS rescore
  20. 2026-06-13 22:56 UTCEPSS rescore
  21. 2026-06-12 23:08 UTCEPSS rescore
  22. 2026-06-11 13:55 UTCEPSS rescore
  23. 2026-06-10 22:14 UTCEPSS rescore
  24. 2026-06-10 13:17 UTCEPSS rescore
  25. 2026-06-08 14:13 UTCEPSS rescore
  26. 2026-06-07 15:21 UTCEPSS rescore
  27. 2026-06-06 13:44 UTCEPSS rescore
  28. 2026-06-06 13:44 UTCEPSS rescore
  29. 2026-06-05 22:43 UTCEPSS rescore
  30. 2026-06-05 22:43 UTCEPSS rescore
  31. 2026-06-05 06:07 UTCEPSS rescore
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  33. 2026-06-04 13:09 UTCEPSS rescore
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  35. 2026-06-02 20:10 UTCEPSS rescore
  36. 2026-06-02 20:10 UTCEPSS rescore
  37. 2026-06-01 13:49 UTCEPSS rescore
  38. 2026-06-01 13:49 UTCEPSS rescore
  39. 2026-05-31 22:28 UTCEPSS rescore
  40. 2026-05-31 15:09 UTCEG score recompute
  41. 2026-05-31 15:09 UTCGHSA enrichment
  42. 2026-05-31 00:13 UTCEPSS rescore
  43. 2026-05-31 00:13 UTCEPSS rescore
  44. 2026-05-29 13:40 UTCEPSS rescore
  45. 2026-05-29 13:40 UTCEPSS rescore
  46. 2026-05-28 13:42 UTCEPSS rescore
  47. 2026-05-28 13:42 UTCEPSS rescore
  48. 2026-05-28 13:42 UTCEPSS rescore
  49. 2026-05-27 13:37 UTCEPSS rescore
  50. 2026-05-26 13:41 UTCEPSS rescore
  51. 2026-05-26 13:41 UTCEPSS rescore
  52. 2026-05-26 07:16 UTCEPSS rescore
  53. 2026-05-26 07:16 UTCEPSS rescore
  54. 2026-05-24 16:42 UTCEPSS rescore
  55. 2026-05-22 21:15 UTCEPSS rescore
  56. 2026-05-21 22:38 UTCEPSS rescore
  57. 2026-05-20 22:36 UTCEPSS rescore
  58. 2026-05-20 22:36 UTCEPSS rescore
  59. 2026-05-20 11:20 UTCEPSS rescore
  60. 2026-05-20 11:20 UTCEPSS rescore
  61. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2004-2731?
CVE-2004-2731 is a medium vulnerability published on December 31, 2004. Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative…
When was CVE-2004-2731 disclosed?
CVE-2004-2731 was first published in the National Vulnerability Database on December 31, 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-2004-2731 actively exploited?
CVE-2004-2731 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 55.8% of all scored CVEs.
How do I remediate CVE-2004-2731?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-2731, 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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