CVE-2009-3889

Severity: medium (CVSS 6.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-11-16 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Linux kernel: through 2.6.26; 2.6.0, 2.6.1, 2.6.2, 2.6.10, 2.6.11, 2.6.11.1 (+215)

References

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/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
http://osvdb.org/60202
http://secunia.com/advisories/37909
http://support.avaya.com/css/P8/documents/100073666
http://www.debian.org/security/2010/dsa-2005
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27
http://www.openwall.com/lists/oss-security/2009/11/13/1
http://www.openwall.com/lists/oss-security/2009/11/13/4
http://www.securityfocus.com/bid/37019

Get alerted when CVE-2009-3889 or the next vulnerability affects your stack