Multiple array index errors in sound/oss/opl3.c in the Linux kernel before 2.6.39 allow local users to cause a denial of service (heap memory corruption) or possibly gain privileges by leveraging write access to /dev/sequencer.
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
http://www.openwall.com/lists/oss-security/2011/03/25/1
https://github.com/torvalds/linux/commit/4d00135a680727f6c3be78f8befaac009030e4df