RHSA-2020:0103: Important: kernel security and bug fix update

First published: Tue Jan 14 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)</li> <li> Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)</li> <li> kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)</li> <li> kernel: TLB flush happens too late on mremap (CVE-2018-18281)</li> <li> kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)</li> 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.<br>Bug Fix(es):<br><li> guest softlockup in mem_cgroup_reparent_charges with 800GB guests (BZ#1770111)</li> <li> [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some SkyLake-X servers (BZ#1775682)</li>

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