The arch_dup_task_struct function in the Transactional Memory ™ implementation in arch/powerpc/kernel/process.c in the Linux kernel before 3.13.7 on the powerpc platform does not properly interact with the clone and fork system calls, which allows local users to cause a denial of service (Program Check and system crash) via certain instructions that are executed with the processor in the Transactional state.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=621b5060e823301d0cba4cb52a7ee3491922d291
secunia.com/advisories/57436
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.7
www.openwall.com/lists/oss-security/2014/03/30/5
www.securityfocus.com/bid/66477
exchange.xforce.ibmcloud.com/vulnerabilities/92113
github.com/torvalds/linux/commit/621b5060e823301d0cba4cb52a7ee3491922d291
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.15