[ELSA-2018-4108] Unbreakable Enterprise kernel security update

[4.1.12-124.15.1]
- netfilter: nfnetlink_cthelper: Add missing permission checks (Kevin Cernekee) [Orabug: 27260771] {CVE-2017-17448}
- netlink: Add netns check on taps (Kevin Cernekee) [Orabug: 27260799] {CVE-2017-17449}
- KVM: Fix stack-out-of-bounds read in write_mmio (Wanpeng Li) [Orabug: 27290606] {CVE-2017-17741} {CVE-2017-17741}
- xprtrdma: Detect unreachable NFS/RDMA servers more reliably (Chuck Lever) [Orabug: 27587008]
- sunrpc: Export xprt_force_disconnect() (Chuck Lever) [Orabug: 27587008]
- sunrpc: Allow xprt->ops->timer method to sleep (Chuck Lever) [Orabug: 27587008]
- KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit (Haozhong Zhang) [Orabug: 27720128]
- x86/microcode: probe CPU features on microcode update (Ankur Arora) [Orabug: 27878230]
- x86/microcode: microcode_write() should not reference boot_cpu_data (Ankur Arora) [Orabug: 27878230]
- x86/cpufeatures: use cpu_data in init_scattered_cpuid_flags() (Ankur Arora) [Orabug: 27878230]
- mm/pagewalk.c: report holes in hugetlb ranges (Jann Horn) [Orabug: 27913118] {CVE-2017-16994}
- KEYS: dont let add_key() update an uninstantiated key (David Howells) [Orabug: 27913330] {CVE-2017-15299}
- drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl() (Murray McAllister) [Orabug: 27913367] {CVE-2017-7294}
- vmscan: Support multiple kswapd threads per node (Buddy Lumpkin) [Orabug: 27913411]
- tcp: dont use F-RTO on non-recurring timeouts (Yuchung Cheng) [Orabug: 27901860]
- net/rds: ib: Release correct number of frags (Hakon Bugge) [Orabug: 27924161]
- crypto: rng - Remove old low-level rng interface (Herbert Xu) [Orabug: 27926676] {CVE-2017-15116}
- crypto: drbg - Convert to new rng interface (Herbert Xu) [Orabug: 27926676] {CVE-2017-15116}
- crypto: ansi_cprng - Convert to new rng interface (Herbert Xu) [Orabug: 27926676] {CVE-2017-15116}
- crypto: krng - Convert to new rng interface (Herbert Xu) [Orabug: 27926676] {CVE-2017-15116}
- RDS: Heap OOB write in rds_message_alloc_sgs() (Mohamed Ghannam) [Orabug: 27934066] {CVE-2018-5332}
- net: Fix double free and memory corruption in get_net_ns_by_id() (Eric W. Biederman) [Orabug: 27934789] {CVE-2017-15129}