Important: Unbreakable Enterprise kernel security update (Oracle Linux 7)

[4.1.12-124.23.1]
- xfs: don't call xfs_da_shrink_inode with NULL bp (Eric Sandeen) [Orabug: 28898616] {CVE-2018-13094}
- ALSA: rawmidi: Change resized buffers atomically (Takashi Iwai) [Orabug: 28898636] {CVE-2018-10902}
- md/raid5: fix a race condition in stripe batch (Shaohua Li) [Orabug: 28917012]
- xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE (Darrick J. Wong) [Orabug: 28924091] {CVE-2018-18690}
- certs: Add Oracle's new X509 cert into the kernel keyring (Eric Snowberg) [Orabug: 28926203]
- block: fix bdi vs gendisk lifetime mismatch (Shan Hai) [Orabug: 28945039]
- Add the following entries to 'uek-rpm/ol[67]/nano_modules.list': kernel/drivers/net/net_failover.ko kernel/net/core/failover.ko Fixes: b3bc7c163fc9 ('net: Introduce generic failover module') (Vijay Balakrishna) [Orabug: 28953351]
- floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl (Andy Whitcroft) [Orabug: 28956547] {CVE-2018-7755} {CVE-2018-7755}
- iov_iter: don't revert iov buffer if csum error (Ding Tianhong) [Orabug: 28960296]
- crypto: salsa20 - fix blkcipher_walk API usage (Eric Biggers) [Orabug: 28976583] {CVE-2017-17805}
- crypto: hmac - require that the underlying hash algorithm is unkeyed (Eric Biggers) [Orabug: 28976653] {CVE-2017-17806}