CVE-2009-3889

6.6 MEDIUM 0.5% exploit odds Fix listed

What it is

The dbg_lvl file for the megaraid_sas driver in the Linux kernel before 2.6.27 has world-writable permissions, which allows local users to change the (1) behavior and (2) logging level of the driver by modifying this file.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of data tampering, service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2009-11-16 19:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:12 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 6.6 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2009-11-16 19:30 UTC
Last modified: 2026-06-16 23:12 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

Linux Kernel ≤ 2.6.26
Linux Kernel 2.6.0
Linux Kernel 2.6.1
Linux Kernel 2.6.2
Linux Kernel 2.6.10
Linux Kernel 2.6.11
Linux Kernel 2.6.11.1
Linux Kernel 2.6.11.2

Attack profile CVSS 2.0 · 6.6

Attack vector: Local
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: Complete
Availability: Complete

Raw vector

AV:L/AC:L/Au:N/C:N/I:C/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-3889.md and follow it. Check whether this project is affected by CVE-2009-3889. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record