description: In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.
problem types: CWE-391
affected:
{
product: Linux kernel v4.13 and newer
vendor: n/a
versions:
status: affected, version: Linux kernel v4.13 and newer
}