CVE-2009-1633

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 3%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c; or (2) long Unicode characters, related to fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c.

CVSS v3
—
EG Score
0.0(none)
EG Risk
0
EG Risk 0/100

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. It is distinct from the 0–10 EG Score, which measures severity.

EPSS
86.1%
KEV
Not listed

Published

May 28, 2009

Last Modified

April 23, 2026

References (76)

Vendor Advisories for CVE-2009-1633(3)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.28-13-server (2.6.28-13.45) @ jaunty2026-05-30ubuntu
redhatkernel-0:2.6.9-89.0.7.EL2009-08-13redhat
redhatkernel-rt-0:2.6.24.7-126.el5rt2009-07-14redhat
redhatkernel-0:2.6.18-128.1.14.el52009-06-16redhat

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.

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 10× in last 7d / 37× 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. 2026-07-23 00:59 UTCEG score recompute
  2. 2026-07-23 00:37 UTCEG score recompute
  3. 2026-07-23 00:03 UTCEG score recompute
  4. 2026-07-22 21:42 UTCEG score recompute
  5. 2026-07-22 14:03 UTCEPSS rescore
  6. 2026-07-21 15:20 UTCEPSS rescore
  7. 2026-07-20 17:03 UTCEPSS rescore
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  9. 2026-07-18 09:59 UTCEPSS rescore
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  1. 2026-06-30 23:19 UTCEPSS rescore
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  4. 2026-06-28 04:52 UTCEPSS rescore
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  6. 2026-06-27 03:05 UTCEPSS rescore
  7. 2026-06-25 13:46 UTCEPSS rescore
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  27. 2026-06-14 23:14 UTCEPSS rescore
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  29. 2026-06-13 22:57 UTCEPSS rescore
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  47. 2026-06-01 13:49 UTCEPSS rescore
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  49. 2026-05-31 22:28 UTCEPSS rescore
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  51. 2026-05-31 00:13 UTCEPSS rescore
  52. 2026-05-31 00:13 UTCEPSS rescore
  53. 2026-05-30 16:43 UTCEG score recompute
  54. 2026-05-30 16:43 UTCVendor advisory
  55. 2026-05-30 16:43 UTCGHSA enrichment
  56. 2026-05-29 13:40 UTCEPSS rescore
  57. 2026-05-28 13:42 UTCEPSS rescore
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  60. 2026-05-27 13:38 UTCEPSS rescore
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  73. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2009-1633?
CVE-2009-1633 is a none vulnerability published on May 28, 2009. Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c;…
When was CVE-2009-1633 disclosed?
CVE-2009-1633 was first published in the National Vulnerability Database on May 28, 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-2009-1633 actively exploited?
CVE-2009-1633 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-1633?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1633, 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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