CVE-2009-2698

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), public exploit)
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 7.8Exploit: Exploit-DB (verified) · public exploitExposed: 0

A fix is available — apply it.

The udp_sendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSG_MORE flag and a UDP socket.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
66(Track)
EG Risk 66/100SSVC: 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%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
94%
KEV
Not listed

Published

August 27, 2009

Last Modified

April 23, 2026

Advisory Details (6)

Auto-updated May 30, 2026
No patch confirmed yet.
generic

About Secunia Research | Flexera

http://secunia.com/advisories/37105
generic

About Secunia Research | Flexera

http://secunia.com/advisories/36510
generic

About Secunia Research | Flexera

http://secunia.com/advisories/36430
generic

About Secunia Research | Flexera

http://secunia.com/advisories/23073
generic
http://rhn.redhat.com/errata/RHSA-2009-1223.html
generic
http://rhn.redhat.com/errata/RHSA-2009-1222.html

Vendor Advisories for CVE-2009-2698(5)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.28-16-imx51 (2.6.28-16.55) @ jaunty2026-05-30ubuntu
redhatkernel-0:2.6.9-78.0.27.EL2009-09-30redhat
redhatkernel-0:2.6.18-92.1.28.el52009-09-22redhat
redhatkernel-0:2.4.21-60.EL2009-08-27redhat
redhatkernel-0:2.6.9-89.0.9.EL2009-08-24redhat
redhatkernel-0:2.6.18-128.7.1.el52009-08-24redhat

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

(3 across 1 ecosystem)
Debian:4.0(3)
PackageVulnerable rangeFixed inDependents
fai-kernels1.17 ... 1.17etch1 (29 versions)1.17+etch.24etch4—
linux-2.62.6.18.dfsg.1-12 ... 2.6.18.dfsg.1-24etch3 (35 versions)2.6.18.dfsg.1-24etch4—
user-mode-linux2.6.18-1um-2 ... 2.6.18-1um-2etch4 (27 versions)2.6.18-1um-2etch.24etch4—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 2× in last 7d / 9× 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. 2026-08-25 13:43 UTCEPSS rescore
  2. 2026-08-19 16:58 UTCEPSS rescore
  3. 2026-08-15 01:24 UTCEPSS rescore
  4. 2026-08-09 13:41 UTCEPSS rescore
  5. 2026-08-08 16:31 UTCEPSS rescore
  6. 2026-08-06 13:41 UTCEPSS rescore
  7. 2026-08-03 10:28 UTCEPSS rescore
  8. 2026-07-30 16:22 UTCEPSS rescore
  9. 2026-07-30 01:26 UTCEPSS rescore
  10. 2026-07-25 14:12 UTCEPSS rescore
  11. 2026-07-24 14:12 UTCEPSS rescore
  12. 2026-07-23 14:14 UTCEPSS rescore
  13. 2026-07-23 00:59 UTCEG score recompute
  14. 2026-07-23 00:37 UTCEG score recompute
  15. 2026-07-23 00:04 UTCEG score recompute
  16. 2026-07-22 21:43 UTCEG score recompute
  17. 2026-07-22 14:03 UTCEPSS rescore
  18. 2026-07-21 15:20 UTCEPSS rescore
  19. 2026-07-20 17:03 UTCEPSS rescore
  20. 2026-07-20 17:03 UTCEPSS rescore
  21. 2026-07-18 09:59 UTCEPSS rescore
  22. 2026-07-16 16:58 UTCEPSS rescore
  23. 2026-07-15 16:54 UTCEPSS rescore
  24. 2026-07-15 16:54 UTCEPSS rescore
  25. 2026-07-15 01:55 UTCEPSS rescore
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  1. 2026-07-13 22:25 UTCEPSS rescore
  2. 2026-07-11 08:22 UTCEPSS rescore
  3. 2026-07-11 08:22 UTCEPSS rescore
  4. 2026-07-09 19:04 UTCEPSS rescore
  5. 2026-07-08 15:10 UTCEPSS rescore
  6. 2026-07-06 16:23 UTCEPSS rescore
  7. 2026-07-06 02:19 UTCEPSS rescore
  8. 2026-07-06 02:19 UTCEPSS rescore
  9. 2026-07-05 02:26 UTCEPSS rescore
  10. 2026-07-05 02:26 UTCEPSS rescore
  11. 2026-07-04 06:27 UTCEPSS rescore
  12. 2026-07-01 15:02 UTCEPSS rescore
  13. 2026-06-30 23:19 UTCEPSS rescore
  14. 2026-06-28 14:03 UTCEPSS rescore
  15. 2026-06-28 04:52 UTCEPSS rescore
  16. 2026-06-28 04:52 UTCEPSS rescore
  17. 2026-06-27 03:05 UTCEPSS rescore
  18. 2026-06-25 13:46 UTCEPSS rescore
  19. 2026-06-25 13:46 UTCEPSS rescore
  20. 2026-06-24 14:02 UTCEPSS rescore
  21. 2026-06-24 14:02 UTCEPSS rescore
  22. 2026-06-23 21:29 UTCEPSS rescore
  23. 2026-06-23 21:29 UTCEPSS rescore
  24. 2026-06-21 01:56 UTCEPSS rescore
  25. 2026-06-21 01:56 UTCEPSS rescore
  26. 2026-06-19 19:22 UTCEPSS rescore
  27. 2026-06-19 19:22 UTCEPSS rescore
  28. 2026-06-18 17:49 UTCEPSS rescore
  29. 2026-06-18 17:49 UTCEPSS rescore
  30. 2026-06-17 17:49 UTCEPSS rescore
  31. 2026-06-17 17:49 UTCEPSS rescore
  32. 2026-06-16 17:49 UTCEPSS rescore
  33. 2026-06-16 17:49 UTCEPSS rescore
  34. 2026-06-15 17:44 UTCEPSS rescore
  35. 2026-06-14 23:14 UTCEPSS rescore
  36. 2026-06-14 23:14 UTCEPSS rescore
  37. 2026-06-12 23:08 UTCEPSS rescore
  38. 2026-06-12 23:08 UTCEPSS rescore
  39. 2026-06-10 22:14 UTCEPSS rescore
  40. 2026-06-10 13:17 UTCEPSS rescore
  41. 2026-06-06 13:44 UTCEPSS rescore
  42. 2026-06-06 13:44 UTCEPSS rescore
  43. 2026-06-06 13:44 UTCEPSS rescore
  44. 2026-06-05 22:44 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
  46. 2026-06-05 06:07 UTCEPSS rescore
  47. 2026-06-04 13:09 UTCEPSS rescore
  48. 2026-06-04 13:09 UTCEPSS rescore
  49. 2026-06-02 20:10 UTCEPSS rescore
  50. 2026-06-02 20:10 UTCEPSS rescore
  51. 2026-06-01 13:49 UTCEPSS rescore
  52. 2026-06-01 13:49 UTCEPSS rescore
  53. 2026-05-31 22:28 UTCEPSS rescore
  54. 2026-05-31 22:28 UTCEPSS rescore
  55. 2026-05-31 00:13 UTCEPSS rescore
  56. 2026-05-31 00:13 UTCEPSS rescore
  57. 2026-05-30 15:35 UTCEG score recompute
  58. 2026-05-30 15:35 UTCVendor advisory
  59. 2026-05-30 15:35 UTCGHSA enrichment
  60. 2026-05-29 13:40 UTCEPSS rescore
  61. 2026-05-28 13:42 UTCEPSS rescore
  62. 2026-05-28 13:42 UTCEPSS rescore
  63. 2026-05-28 13:42 UTCEPSS rescore
  64. 2026-05-27 13:38 UTCEPSS rescore
  65. 2026-05-27 13:38 UTCEPSS rescore
  66. 2026-05-26 13:41 UTCEPSS rescore
  67. 2026-05-26 13:41 UTCEPSS rescore
  68. 2026-05-24 16:43 UTCEPSS rescore
  69. 2026-05-22 21:15 UTCEPSS rescore
  70. 2026-05-22 21:15 UTCEPSS rescore
  71. 2026-05-20 22:37 UTCEPSS rescore
  72. 2026-05-20 22:37 UTCEPSS rescore
  73. 2026-05-20 11:21 UTCEPSS rescore
  74. 2026-05-20 11:20 UTCEPSS rescore
  75. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 GitHub PoC) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCxiaoxiaoleo/CVE-2009-2698
    First seen Feb 16, 2018

    CVE-2009-2698 compiled for CentOS 4.8

    Open source ↗
  • Exploit-DBEDB-9575✓ verified
    First seen Sep 2, 2009

    Linux Kernel < 2.6.19 (Debian 4) - 'udp_sendmsg' Local Privilege Escalation (3)

    Open source ↗
  • Exploit-DBEDB-9574✓ verified
    First seen Sep 2, 2009

    Linux Kernel < 2.6.19 (x86/x64) - 'udp_sendmsg' Local Privilege Escalation (2)

    Open source ↗
  • Exploit-DBEDB-9542✓ verified
    First seen Aug 31, 2009

    Linux Kernel 2.6 < 2.6.19 (White Box 4 / CentOS 4.4/4.5 / Fedora Core 4/5/6 x86) - 'ip_append_data()' Ring0 Privilege Escalation (1)

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2009-2698?
CVE-2009-2698 is a high vulnerability published on August 27, 2009. The udpsendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSGMORE flag and a UDP socket.
When was CVE-2009-2698 disclosed?
CVE-2009-2698 was first published in the National Vulnerability Database on August 27, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-2698 actively exploited?
CVE-2009-2698 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.2% of all scored CVEs.
What is the CVSS score of CVE-2009-2698?
CVE-2009-2698 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2009-2698?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-2698, 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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