CVE-2012-4565

MEDIUMCVSS v2 · 4.74.7—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.7 — 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:N/I:N/A:C. 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
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: 4.7Exploit: None knownExposed: 0

A fix is available — apply it.

The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.

CVSS v2.0 (legacy)
4.7MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.7(low)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity47% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

December 21, 2012

Last Modified

April 29, 2026

References (36)

Vendor Advisories for CVE-2012-4565(1)

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

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-3.5.0-22-generic (3.5.0-22.34~precise1) @ precise2026-05-29ubuntu
ubuntulinux-image-3.0.0-28-omap (3.0.0-28.45) @ oneiric2026-05-29ubuntu
ubuntulinux-image-2.6.32-350-ec2 (2.6.32-350.57) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.24-32-sparc64-smp (2.6.24-32.106) @ hardy2026-05-29ubuntu
ubuntulinux-image-3.0.0-1218-omap4 (3.0.0-1218.31) @ oneiric2026-05-29ubuntu
ubuntulinux-image-3.2.0-1422-omap4 (3.2.0-1422.29) @ precise2026-05-29ubuntu
ubuntulinux-image-3.5.0-19-powerpc64-smp (3.5.0-19.30) @ quantal2026-05-29ubuntu
ubuntulinux-image-3.5.0-215-omap4 (3.5.0-215.22) @ quantal2026-05-29ubuntu
ubuntulinux-image-3.2.0-34-highbank (3.2.0-34.53) @ precise2026-05-29ubuntu
ubuntulinux-image-3.0.0-28-virtual (3.0.0-28.45~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-45-versatile (2.6.32-45.100) @ lucid2026-05-29ubuntu
redhatkernel-0:2.6.32-279.19.1.el62012-12-18redhat
redhatkernel-rt-0:3.2.33-rt50.66.el6rt2012-12-04redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—3.2.35-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—3.2.35-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—3.2.35-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—3.2.35-1—

Additional Vendor Advisories

(12)

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 4× in last 7d / 16× 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 125 total refreshes for this CVE.

  1. 2026-08-21 23:43 UTCEPSS rescore
  2. 2026-08-19 16:59 UTCEPSS rescore
  3. 2026-08-18 13:42 UTCEPSS rescore
  4. 2026-08-16 02:09 UTCEPSS rescore
  5. 2026-08-15 01:25 UTCEPSS rescore
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  7. 2026-08-07 22:49 UTCOSV refresh
  8. 2026-08-07 16:21 UTCEPSS rescore
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  11. 2026-08-04 15:04 UTCEPSS rescore
  12. 2026-07-30 01:26 UTCEPSS rescore
  13. 2026-07-28 15:31 UTCEPSS rescore
  14. 2026-07-26 13:46 UTCEG score recompute▲ 4.70
  15. 2026-07-25 14:12 UTCEPSS rescore
  16. 2026-07-23 14:14 UTCEPSS rescore
  17. 2026-07-23 01:08 UTCEG score recompute
  18. 2026-07-23 00:11 UTCEG score recompute
  19. 2026-07-22 21:50 UTCEG score recompute
  20. 2026-07-22 15:50 UTCOSV refresh
  21. 2026-07-22 14:04 UTCEPSS rescore
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  24. 2026-07-20 17:03 UTCEPSS rescore
  25. 2026-07-20 17:03 UTCEPSS rescore
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  1. 2026-07-19 14:27 UTCEPSS rescore
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  4. 2026-07-16 16:58 UTCEPSS rescore
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  8. 2026-07-13 22:25 UTCEPSS rescore
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  11. 2026-07-09 19:05 UTCEPSS rescore
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  16. 2026-07-06 02:19 UTCEPSS rescore
  17. 2026-07-05 10:59 UTCOSV refresh
  18. 2026-07-05 02:26 UTCEPSS rescore
  19. 2026-07-04 06:27 UTCEPSS rescore
  20. 2026-07-02 14:01 UTCEPSS rescore
  21. 2026-07-01 15:02 UTCEPSS rescore
  22. 2026-06-30 23:19 UTCEPSS rescore
  23. 2026-06-30 23:19 UTCEPSS rescore
  24. 2026-06-29 14:02 UTCEPSS rescore
  25. 2026-06-28 14:03 UTCEPSS rescore
  26. 2026-06-28 04:53 UTCEPSS rescore
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  28. 2026-06-27 03:05 UTCEPSS rescore
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  30. 2026-06-25 13:46 UTCEPSS rescore
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  37. 2026-06-21 14:53 UTCEPSS rescore
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  40. 2026-06-19 19:22 UTCEPSS rescore
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  42. 2026-06-18 17:49 UTCEPSS rescore
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  44. 2026-06-17 17:49 UTCEPSS rescore
  45. 2026-06-17 17:49 UTCEPSS rescore
  46. 2026-06-16 21:43 UTCOSV refresh
  47. 2026-06-16 17:49 UTCEPSS rescore
  48. 2026-06-16 17:49 UTCEPSS rescore
  49. 2026-06-15 17:44 UTCEPSS rescore
  50. 2026-06-14 23:14 UTCEPSS rescore
  51. 2026-06-14 23:14 UTCEPSS rescore
  52. 2026-06-13 22:57 UTCEPSS rescore
  53. 2026-06-12 23:08 UTCEPSS rescore
  54. 2026-06-11 13:56 UTCEPSS rescore
  55. 2026-06-10 22:14 UTCEPSS rescore
  56. 2026-06-10 13:18 UTCEPSS rescore
  57. 2026-06-08 14:14 UTCEPSS rescore
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  59. 2026-06-07 15:22 UTCEPSS rescore
  60. 2026-06-07 15:22 UTCEPSS rescore
  61. 2026-06-06 13:45 UTCEPSS rescore
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  63. 2026-06-05 22:44 UTCEPSS rescore
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  65. 2026-06-05 06:08 UTCEPSS rescore
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  67. 2026-06-02 20:10 UTCEPSS rescore
  68. 2026-06-02 20:10 UTCEPSS rescore
  69. 2026-06-01 13:49 UTCEPSS rescore
  70. 2026-05-31 22:28 UTCEPSS rescore
  71. 2026-05-31 22:28 UTCEPSS rescore
  72. 2026-05-31 00:14 UTCEPSS rescore
  73. 2026-05-31 00:14 UTCEPSS rescore
  74. 2026-05-29 13:41 UTCEPSS rescore
  75. 2026-05-29 01:32 UTCEG score recompute

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2012-4565?
CVE-2012-4565 is a medium vulnerability published on December 21, 2012. The tcpillinoisinfo function in net/ipv4/tcpillinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcpcongestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.
When was CVE-2012-4565 disclosed?
CVE-2012-4565 was first published in the National Vulnerability Database on December 21, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-4565 actively exploited?
CVE-2012-4565 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 60.0% of all scored CVEs.
How do I remediate CVE-2012-4565?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-4565, 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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