RHSA-2020:0103: Important: kernel security and bug fix update
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 blkdrainqueue() function in block/blk-core.c (CVE-2018-20856)</li> <li> Kernel: KVM: potential use-after-free via kvmioctlcreatedevice() (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 mmgetnotzero()/gettaskmm() 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 memcgroupreparentcharges with 800GB guests (BZ#1770111)</li> <li> [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some SkyLake-X servers (BZ#1775682)</li>
Affected Software
Remediation
Event History
Frequently Asked Questions
What vulnerabilities does RHSA-2020:0103 address?
RHSA-2020:0103 addresses use-after-free vulnerabilities in the Linux kernel, specifically in the __blk_drain_queue() function and potential use-after-free in KVM.
What is the severity of RHSA-2020:0103?
The severity of RHSA-2020:0103 is classified as important.
How do I fix RHSA-2020:0103?
To fix RHSA-2020:0103, update to the kernel version 3.10.0-693.62.1.el7 or later.
Which operating systems are affected by RHSA-2020:0103?
RHSA-2020:0103 affects Red Hat Enterprise Linux 7 systems with the specified kernel versions.
Is there a specific package update required for RHSA-2020:0103?
Yes, the kernel package and associated packages including kernel-debug, kernel-devel, and others need to be updated.