ID

VAR-201902-0242

CVE

CVE-2019-6974

TITLE

Linux kernel Race condition vulnerability

DESCRIPTION

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free. Linux kernel Contains a race condition vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. Linux kernel is prone to a security bypass vulnerability. Attackers can exploit this issue to bypass security restrictions to perform unauthorized actions; this may aid in launching further attacks. Versions prior to Linux kernel 4.20.8 are vulnerable. ========================================================================== Ubuntu Security Notice USN-3932-2 April 02, 2019 linux-lts-xenial, linux-aws vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. A local attacker could use this to cause a denial of service. (CVE-2017-18249) Wen Xu discovered that the f2fs file system implementation in the Linux kernel did not properly validate metadata. An attacker could use this to construct a malicious f2fs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE-2018-13100, CVE-2018-14614, CVE-2018-14616) Wen Xu and Po-Ning Tseng discovered that btrfs file system implementation in the Linux kernel did not properly validate metadata. An attacker could use this to construct a malicious btrfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-14610, CVE-2018-14611, CVE-2018-14612, CVE-2018-14613) Vasily Averin and Evgenii Shatokhin discovered that a use-after-free vulnerability existed in the NFS41+ subsystem when multiple network namespaces are in use. A local attacker in a container could use this to cause a denial of service (system crash) or possibly execute arbitrary code. A privileged local attacker could use this to possibly execute arbitrary code. (CVE-2018-9517) Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an information leak in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could use this to expose sensitive information (kernel memory). An attacker in a guest VM with access to /dev/kvm could use this to cause a denial of service (guest VM crash). (CVE-2019-6974) Jim Mattson and Felix Wilhelm discovered a use-after-free vulnerability in the KVM subsystem of the Linux kernel, when using nested virtual machines. A local attacker in a guest VM could use this to cause a denial of service (system crash) or possibly execute arbitrary code in the host system. (CVE-2019-7221) Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux kernel, when nested virtualization is used. A local attacker could use this to expose sensitive information (host system memory to a guest VM). (CVE-2019-7222) Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL pointer dereference vulnerability. (CVE-2019-9213) Muyu Yu discovered that the CAN implementation in the Linux kernel in some situations did not properly restrict the field size when processing outgoing frames. A local attacker with CAP_NET_ADMIN privileges could use this to execute arbitrary code. (CVE-2019-3701) Vladis Dronov discovered that the debug interface for the Linux kernel's HID subsystem did not properly validate passed parameters in some situations. A local privileged attacker could use this to cause a denial of service (infinite loop). (CVE-2019-3819) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-4.4.0-1040-aws 4.4.0-1040.43 linux-image-4.4.0-144-generic 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-generic-lpae 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-lowlatency 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-powerpc-e500mc 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-powerpc-smp 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-powerpc64-emb 4.4.0-144.170~14.04.1 linux-image-4.4.0-144-powerpc64-smp 4.4.0-144.170~14.04.1 linux-image-aws 4.4.0.1040.41 linux-image-generic-lpae-lts-xenial 4.4.0.144.127 linux-image-generic-lts-xenial 4.4.0.144.127 linux-image-lowlatency-lts-xenial 4.4.0.144.127 linux-image-powerpc-e500mc-lts-xenial 4.4.0.144.127 linux-image-powerpc-smp-lts-xenial 4.4.0.144.127 linux-image-powerpc64-emb-lts-xenial 4.4.0.144.127 linux-image-powerpc64-smp-lts-xenial 4.4.0.144.127 linux-image-virtual-lts-xenial 4.4.0.144.127 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Bug Fix(es): * VM hangs on RHEL rt-kernel and OSP 13 [rhel-7.6.z] (BZ#1688673) * kernel-rt: update to the RHEL7.6.z batch#4 source tree (BZ#1689417) Users of kernel are advised to upgrade to these updated packages, which fix these bugs. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2019:0818-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0818 Issue date: 2019-04-23 CVE Names: CVE-2019-6974 CVE-2019-7221 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Security Fix(es): * Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974) * Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer (CVE-2019-7221) 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): * rbd: avoid corruption on partially completed bios [rhel-7.6.z] (BZ#1672514) * xfs_vm_writepages deadly embrace between kworker and user task. [rhel-7.6.z] (BZ#1673281) * Offload Connections always get vlan priority 0 [rhel-7.6.z] (BZ#1673821) * [NOKIA] RHEL sends flood of Neighbour Solicitations under specific conditions [rhel-7.6.z] (BZ#1677179) * RHEL 7.6 - Host crash occurred on NVMe/IB system while running controller reset [rhel-7.6.z] (BZ#1678214) * [rhel7] raid0 md workqueue deadlock with stacked md devices [rhel-7.6.z] (BZ#1678215) * [PureStorage7.6]nvme disconnect following an unsuccessful Admin queue creation causes kernel panic [rhel-7.6.z] (BZ#1678216) * RFC: Regression with -fstack-check in 'backport upstream large stack guard patch to RHEL6' patch [rhel-7.6.z] (BZ#1678221) * [Hyper-V] [RHEL 7.6]hv_netvsc: Fix a network regression after ifdown/ifup [rhel-7.6.z] (BZ#1679997) * rtc_cmos: probe of 00:01 failed with error -16 [rhel-7.6.z] (BZ#1683078) * ACPI WDAT watchdog update [rhel-7.6.z] (BZ#1683079) * high ovs-vswitchd CPU usage when VRRP over VXLAN tunnel causing qrouter fail-over [rhel-7.6.z] (BZ#1683093) * Openshift node drops outgoing POD traffic due to NAT hashtable race in __ip_conntrack_confirm() [rhel-7.6.z] (BZ#1686766) * [Backport] [v3,2/2] net: igmp: Allow user-space configuration of igmp unsolicited report interval [rhel-7.6.z] (BZ#1686771) * [RHEL7.6]: Intermittently seen FIFO parity error on T6225-SO adapter [rhel-7.6.z] (BZ#1687487) * The number of unsolict report about IGMP is incorrect [rhel-7.6.z] (BZ#1688225) * RDT driver causing failure to boot on AMD Rome system with more than 255 CPUs [rhel-7.6.z] (BZ#1689120) * mpt3sas_cm0: fault_state(0x2100)! [rhel-7.6.z] (BZ#1689379) * rwsem in inconsistent state leading system to hung [rhel-7.6.z] (BZ#1690323) Users of kernel are advised to upgrade to these updated packages, which fix these bugs. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1671904 - CVE-2019-7221 Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer 1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: kernel-3.10.0-957.12.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.1.el7.noarch.rpm kernel-doc-3.10.0-957.12.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.1.el7.x86_64.rpm kernel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-headers-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.1.el7.x86_64.rpm perf-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: kernel-3.10.0-957.12.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.1.el7.noarch.rpm kernel-doc-3.10.0-957.12.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.1.el7.x86_64.rpm kernel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-headers-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.1.el7.x86_64.rpm perf-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: kernel-3.10.0-957.12.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.1.el7.noarch.rpm kernel-doc-3.10.0-957.12.1.el7.noarch.rpm ppc64: kernel-3.10.0-957.12.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-957.12.1.el7.ppc64.rpm kernel-debug-3.10.0-957.12.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-957.12.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.12.1.el7.ppc64.rpm kernel-devel-3.10.0-957.12.1.el7.ppc64.rpm kernel-headers-3.10.0-957.12.1.el7.ppc64.rpm kernel-tools-3.10.0-957.12.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-957.12.1.el7.ppc64.rpm perf-3.10.0-957.12.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm python-perf-3.10.0-957.12.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-957.12.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debug-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.12.1.el7.ppc64le.rpm kernel-devel-3.10.0-957.12.1.el7.ppc64le.rpm kernel-headers-3.10.0-957.12.1.el7.ppc64le.rpm kernel-tools-3.10.0-957.12.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-957.12.1.el7.ppc64le.rpm perf-3.10.0-957.12.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm python-perf-3.10.0-957.12.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm s390x: kernel-3.10.0-957.12.1.el7.s390x.rpm kernel-debug-3.10.0-957.12.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.s390x.rpm kernel-debug-devel-3.10.0-957.12.1.el7.s390x.rpm kernel-debuginfo-3.10.0-957.12.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-957.12.1.el7.s390x.rpm kernel-devel-3.10.0-957.12.1.el7.s390x.rpm kernel-headers-3.10.0-957.12.1.el7.s390x.rpm kernel-kdump-3.10.0-957.12.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-957.12.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-957.12.1.el7.s390x.rpm perf-3.10.0-957.12.1.el7.s390x.rpm perf-debuginfo-3.10.0-957.12.1.el7.s390x.rpm python-perf-3.10.0-957.12.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.s390x.rpm x86_64: bpftool-3.10.0-957.12.1.el7.x86_64.rpm kernel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-headers-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.1.el7.x86_64.rpm perf-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: kernel-debug-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.12.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.12.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: kernel-3.10.0-957.12.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.1.el7.noarch.rpm kernel-doc-3.10.0-957.12.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.1.el7.x86_64.rpm kernel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-devel-3.10.0-957.12.1.el7.x86_64.rpm kernel-headers-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.1.el7.x86_64.rpm perf-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.1.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2019-6974 https://access.redhat.com/security/cve/CVE-2019-7221 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXL8hr9zjgjWX9erEAQhpRA//SO28D0BzCiZeNMWg7p//rAc9DGgsNxnq CMBTE2lJGOOt0DXTAw9Y3h/p46aA1UUbGmjUtL/Vvu0RUpuuPTOa3hzviavXVGBu PLh+QHRw9E9NBi90T24R2M0CeuUCVDn2UUqIWia7d5bb3VuS6zCjP8cq9bBa7kBN /bpYXeCv38pLGDU2H8P8N7EY4pFJBXp7CpiuLvsMgxNfUlxEZh913BfStDHWJAg2 yi9NdCNtG+3hFB3LhLEedYTGxfZmuNBp8K9D6en1RryideGeyyjGiKKShRGclD+o KOnuXrPuHdS5fO1ci8FzymQapQSzUWjuwYXmqFAaPLLOGesGgb1wiCKgqLN3+3Oy jjlDtD8lkiZDNwDRs27WOkQMzsV/+J0cUAQOoP0KbetSQSJuRLXD0Kkss0c8kpO6 W7YVpwVnMioe0jFtpNu8OtjIgsTRycZ+Z01Mr7U/gH9J7i5Dysvtil+2i2xBPnM5 +vLPIDzreB+pbG5BPrIUgM/CkYh5Yltq4nbiifhWXdSxR/t0a06in60SbDezB6Lt SnQavsmJSZBQ5iEhQABcMNChZPeZj1N5haC4ZFP8XD9gJLZyrNqL1tBLzVr4xhzx +4Trsi6td3ZuQe0wdX2rS07oIk6Tjc2yxNaiGMvM4NPYt4ZOswZvyQYk4QPJ2VRN zd1Qi+4M27U=IoLu -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . 7.4) - noarch, x86_64 3. Bug Fix(es): * guest softlockup in mem_cgroup_reparent_charges with 800GB guests (BZ#1770111) * [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some SkyLake-X servers (BZ#1775682) 4. M. Vefa Bicakci and Andy Lutomirski discovered that the kernel did not properly set up all arguments to an error handler callback used when running as a paravirtualized guest

AFFECTED PRODUCTS