The md driver (drivers/md/md.c) in the Linux kernel before 2.6.30.2 might allow local users to cause a denial of service (NULL pointer dereference) via vectors related to "suspend_* sysfs attributes" and the (1) suspend_lo_store or (2) suspend_hi_store functions. NOTE: this is only a vulnerability when sysfs is writable by an attacker.
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
https://rhn.redhat.com/errata/RHSA-2009-1540.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10396
https://exchange.xforce.ibmcloud.com/vulnerabilities/52858
http://www.vupen.com/english/advisories/2010/0528
http://www.ubuntu.com/usn/USN-852-1
http://www.securitytracker.com/id?1022961
http://www.openwall.com/lists/oss-security/2009/07/26/1
http://www.openwall.com/lists/oss-security/2009/07/24/1
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.2
http://secunia.com/advisories/38834
http://secunia.com/advisories/38794
http://secunia.com/advisories/37105
http://secunia.com/advisories/36501
http://lists.vmware.com/pipermail/security-announce/2010/000082.html