CVE-2011-1093

HIGHCVSS v2 · 7.87.8—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.8 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/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 3.5% 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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS v2: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

CVSS v2.0 (legacy)
7.8HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.8(low)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity78% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

July 18, 2011

Last Modified

April 29, 2026

References (16)

Vendor Advisories for CVE-2011-1093(3)

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

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.24-29-lpiacompat (2.6.24-29.93) @ hardy2026-05-29ubuntu
ubuntulinux-image-2.6.35-903-omap4 (2.6.35-903.24) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.35-30-powerpc (2.6.35-30.54) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.38-12-generic (2.6.38-12.51~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-32-sparc64 (2.6.32-32.62) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.35-30-virtual (2.6.35-30.56~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-416-dove (2.6.32-416.33) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.31-610-imx51 (2.6.31-610.28) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.38-10-generic (2.6.38-10.46) @ natty2026-05-29ubuntu
redhatkernel-0:2.6.18-238.12.1.el52011-05-31redhat
redhatkernel-0:2.6.32-71.29.1.el62011-05-10redhat
redhatkernel-rt-0:2.6.33.9-rt31.64.el5rt2011-05-10redhat

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

(1 across 1 ecosystem)
Debian:5.0(1)
PackageVulnerable rangeFixed inDependents
linux-2.62.6.26-13 ... 2.6.26-26lenny2 (39 versions)2.6.26-26lenny3—

Weakness Classification(1)

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

Additional Vendor Advisories

(9)

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 3× in last 7d / 7× 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 121 total refreshes for this CVE.

  1. 2026-09-06 13:41 UTCEPSS rescore
  2. 2026-09-05 15:22 UTCEPSS rescore
  3. 2026-09-04 13:55 UTCEPSS rescore
  4. 2026-08-25 13:43 UTCEPSS rescore
  5. 2026-08-19 16:58 UTCEPSS rescore
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  7. 2026-08-15 01:25 UTCEPSS rescore
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  11. 2026-08-05 19:12 UTCEPSS rescore
  12. 2026-08-04 15:04 UTCEPSS rescore
  13. 2026-08-01 04:10 UTCEPSS rescore
  14. 2026-07-30 01:26 UTCEPSS rescore
  15. 2026-07-26 13:42 UTCEG score recompute▲ 7.80
  16. 2026-07-23 14:14 UTCEPSS rescore
  17. 2026-07-23 01:04 UTCEG score recompute
  18. 2026-07-23 00:40 UTCEG score recompute
  19. 2026-07-23 00:08 UTCEG score recompute
  20. 2026-07-22 21:47 UTCEG score recompute
  21. 2026-07-22 14:03 UTCEPSS rescore
  22. 2026-07-21 15:21 UTCEPSS rescore
  23. 2026-07-20 17:03 UTCEPSS rescore
  24. 2026-07-20 17:03 UTCEPSS rescore
  25. 2026-07-19 02:25 UTCEPSS rescore
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  1. 2026-07-19 02:25 UTCEPSS rescore
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  3. 2026-07-16 16:58 UTCEPSS rescore
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  6. 2026-07-15 01:55 UTCEPSS rescore
  7. 2026-07-13 22:25 UTCEPSS rescore
  8. 2026-07-11 08:22 UTCEPSS rescore
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  20. 2026-06-30 23:19 UTCEPSS rescore
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  22. 2026-06-28 04:53 UTCEPSS rescore
  23. 2026-06-28 04:52 UTCEPSS rescore
  24. 2026-06-27 03:05 UTCEPSS rescore
  25. 2026-06-27 03:05 UTCEPSS rescore
  26. 2026-06-25 13:46 UTCEPSS rescore
  27. 2026-06-24 14:02 UTCEPSS rescore
  28. 2026-06-24 14:02 UTCEPSS rescore
  29. 2026-06-23 21:30 UTCEPSS rescore
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  31. 2026-06-22 14:22 UTCEPSS rescore
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  35. 2026-06-19 19:22 UTCEPSS rescore
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  37. 2026-06-18 17:49 UTCEPSS rescore
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  39. 2026-06-17 17:49 UTCEPSS rescore
  40. 2026-06-17 17:49 UTCEPSS rescore
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  42. 2026-06-16 17:49 UTCEPSS rescore
  43. 2026-06-15 17:44 UTCEPSS rescore
  44. 2026-06-14 23:14 UTCEPSS rescore
  45. 2026-06-14 23:14 UTCEPSS rescore
  46. 2026-06-13 22:57 UTCEPSS rescore
  47. 2026-06-13 22:57 UTCEPSS rescore
  48. 2026-06-12 23:08 UTCEPSS rescore
  49. 2026-06-11 13:56 UTCEPSS rescore
  50. 2026-06-10 22:14 UTCEPSS rescore
  51. 2026-06-10 13:17 UTCEPSS rescore
  52. 2026-06-08 14:14 UTCEPSS rescore
  53. 2026-06-08 14:14 UTCEPSS rescore
  54. 2026-06-07 15:22 UTCEPSS rescore
  55. 2026-06-07 15:22 UTCEPSS rescore
  56. 2026-06-06 13:45 UTCEPSS rescore
  57. 2026-06-06 13:44 UTCEPSS rescore
  58. 2026-06-05 22:44 UTCEPSS rescore
  59. 2026-06-05 06:08 UTCEPSS rescore
  60. 2026-06-05 06:07 UTCEPSS rescore
  61. 2026-06-04 13:09 UTCEPSS rescore
  62. 2026-06-04 13:09 UTCEPSS rescore
  63. 2026-06-02 20:10 UTCEPSS rescore
  64. 2026-06-02 20:10 UTCEPSS rescore
  65. 2026-06-01 13:49 UTCEPSS rescore
  66. 2026-06-01 13:49 UTCEPSS rescore
  67. 2026-05-31 22:28 UTCEPSS rescore
  68. 2026-05-31 22:28 UTCEPSS rescore
  69. 2026-05-31 00:14 UTCEPSS rescore
  70. 2026-05-31 00:14 UTCEPSS rescore
  71. 2026-05-29 13:41 UTCEPSS rescore
  72. 2026-05-29 13:40 UTCEPSS rescore
  73. 2026-05-29 07:31 UTCEG score recompute
  74. 2026-05-29 07:31 UTCVendor advisory
  75. 2026-05-29 07:31 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2011-1093?
CVE-2011-1093 is a high vulnerability published on July 18, 2011. The dccprcvstate_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and…
When was CVE-2011-1093 disclosed?
CVE-2011-1093 was first published in the National Vulnerability Database on July 18, 2011, 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-2011-1093 actively exploited?
CVE-2011-1093 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 11.7% of all scored CVEs.
How do I remediate CVE-2011-1093?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1093, 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.

Dependency Blast Radius

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