Integer overflow in the sys_oabi_semtimedop function in arch/arm/kernel/sys_oabi-compat.c in the Linux kernel before 2.6.39 on the ARM platform, when CONFIG_OABI_COMPAT is enabled, allows local users to gain privileges or cause a denial of service (heap memory corruption) by providing a crafted argument and leveraging a race condition.
http://www.openwall.com/lists/oss-security/2011/05/02/16
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39