(RHSA-2019:2566) Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members (CVE-2018-13405)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• [Dell EMC 7.6 BUG] File system corrupting with I/O Stress on H330 PERC on AMD Systems (BZ#1698337)

• [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some SkyLake-X servers (BZ#1719780)

• Poor system performance from thundering herd of kworkers competing for mddev->flush_bio ownership (BZ#1721533)

• fragmented packets timing out (BZ#1729412)

• After update to RHEL 7.6 (3.10.0-957.1.3.el7.x86_64) from 7.4, customer has experienced multiple panics in kernel at BUG at drivers/iommu/iova.c:859! (BZ#1731299)

• kernel build: speed up debuginfo extraction (BZ#1731463)

Enhancement(s):

• [Intel 7.6 FEAT] Graphics Kernel Driver v4.15 updates (BZ#1716309)