CVE-2009-0746

MEDIUMCVSS v2 · 4.94.9—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.9 — 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: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 0.8% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: EPSS, NVD CVSS v2.0
Weaponized
4.9EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS v2: 4.9Exploit: Exploit-DB (verified)Exposed services: Not assessed

A fix is available — apply it.

The make_indexed_dir function in fs/ext4/namei.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate a certain rec_len field, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.

CVSS v2.0 (legacy)
4.9MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.9MEDIUMlow confidence
EG Risk
53
EG Risk 53/100

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 (value × EchelonGraph’s weight)
Severity49% × 45%
The EG Score, 4.9 of 10.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track or Track* at medium and Track* or Attend at high mission impact.
Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
53rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track or Track* at medium and Track* or Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

February 27, 2009

Last Modified

April 23, 2026

References (18)

15 of 18 shown · show the other 3

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-image-2.6.27-11-virtual (2.6.27-11.31) @ intrepid2026-05-30ubuntu
redhatkernel-0:2.6.18-164.el52009-09-02redhat

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 rangeFix by version rangeDependents
linux-2.62.6.26-13, 2.6.26-13lenny2~bpo40+1
  • every version up to 2.6.26-13lenny2: fixed in 2.6.26-13lenny2
—

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 8× in last 7d / 17× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 81 of 115 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 19 repeat rows among the latest 100 are merged into the row they repeat. The 34 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:38 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  2. 2026-10-10 19:54 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  3. 2026-10-09 20:00 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  4. 2026-10-08 16:33 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  5. 2026-10-07 23:37 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  6. 2026-10-06 15:09 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  7. 2026-10-05 17:37 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  8. 2026-10-04 23:15 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  9. 2026-09-30 14:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  10. 2026-09-29 07:57 UTCEG score recompute
  11. 2026-09-27 13:39 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  12. 2026-09-26 15:52 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-09-24 13:57 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  14. 2026-09-17 19:20 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  15. 2026-09-15 03:04 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  16. 2026-09-13 16:40 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  17. 2026-09-12 14:54 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  18. 2026-09-10 09:24 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  19. 2026-09-06 13:41 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  20. 2026-09-05 15:22 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  21. 2026-09-04 13:55 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  22. 2026-08-28 21:34 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  23. 2026-08-27 14:19 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  24. 2026-08-25 13:43 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  25. 2026-08-19 16:58 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
Show 56 more
  1. 2026-08-15 01:24 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  2. 2026-08-09 13:41 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  3. 2026-08-08 16:31 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  4. 2026-08-06 13:41 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  5. 2026-08-03 10:28 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  6. 2026-07-30 16:22 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  7. 2026-07-30 01:26 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  8. 2026-07-26 13:37 UTCEG score recomputeFirst assessed: 4.9 MEDIUM
  9. 2026-07-25 14:12 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  10. 2026-07-24 14:12 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  11. 2026-07-23 14:14 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  12. 2026-07-23 00:58 UTCEG score recompute
  13. 2026-07-23 00:36 UTCEG score recompute
  14. 2026-07-23 00:03 UTCEG score recompute
  15. 2026-07-22 21:42 UTCEG score recompute
  16. 2026-07-22 14:03 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  17. 2026-07-21 15:20 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  18. 2026-07-20 17:03 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  19. 2026-07-18 09:59 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  20. 2026-07-16 16:58 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  21. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  22. 2026-07-15 01:55 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  23. 2026-07-13 22:25 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  24. 2026-07-13 06:07 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  25. 2026-07-11 08:22 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  26. 2026-07-09 19:04 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  27. 2026-07-08 15:10 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  28. 2026-07-06 16:23 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  29. 2026-07-06 02:19 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  30. 2026-07-05 02:26 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  31. 2026-07-04 06:27 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  32. 2026-07-01 15:02 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  33. 2026-06-30 23:19 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  34. 2026-06-29 14:02 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  35. 2026-06-28 14:03 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  36. 2026-06-28 04:52 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  37. 2026-06-27 03:05 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  38. 2026-06-25 13:46 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  39. 2026-06-24 14:02 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  40. 2026-06-23 21:29 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  41. 2026-06-22 14:22 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  42. 2026-06-21 14:53 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  43. 2026-06-21 01:56 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  44. 2026-06-19 19:22 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  45. 2026-06-18 17:49 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  46. 2026-06-17 17:49 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  47. 2026-06-16 17:49 UTCEPSS rescoreEPSS 0.8% · 50th percentile
  48. 2026-06-15 17:44 UTCEPSS rescoreEPSS 0.8% · 49th percentile
  49. 2026-06-14 23:14 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  50. 2026-06-13 22:57 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  51. 2026-06-12 23:08 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  52. 2026-06-10 22:14 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  53. 2026-06-10 13:17 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  54. 2026-06-08 14:13 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  55. 2026-06-07 15:22 UTCEPSS rescoreEPSS 0.3% · 50th percentile
  56. 2026-06-06 13:44 UTCEPSS rescoreEPSS 0.3% · 50th percentile

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Exploit-DB entry). Defenders should treat patch urgency accordingly.

  • Exploit-DBEDB-32775✓ verified
    Published Feb 16, 2009

    Linux Kernel 2.6.x - 'make_indexed_dir()' Local Denial of Service

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(4)

What is CVE-2009-0746?
CVE-2009-0746 is a medium-severity vulnerability; its CVE record was published on February 27, 2009. The makeindexeddir function in fs/ext4/namei.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate a certain rec_len field, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.
When was CVE-2009-0746 made public?
CVE-2009-0746 was made public on February 20, 2009: that is the date its CVE record's CNA, MITRE Corporation, gives for when the vulnerability was made public. The CVE record itself was published on February 27, 2009. EchelonGraph's copy of the record carries a last-modified date of April 23, 2026; the record at its source may have been updated since.
Is CVE-2009-0746 actively exploited?
CVE-2009-0746 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
How do I remediate CVE-2009-0746?
A fix for CVE-2009-0746 is available: update to the fixed version the vendor names in its advisory.

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