CVE-2009-3889 Information

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.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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 http://www.ubuntu.com/usn/usn-864-1 https://bugzilla.redhat.com/show_bug.cgi?id=526068 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11018 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A7163 https://rhn.redhat.com/errata/RHSA-2010-0046.html https://rhn.redhat.com/errata/RHSA-2010-0095.html