-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2020:0103-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:0103 Issue date: 2020-01-14 CVE Names: CVE-2018-10853 CVE-2018-18281 CVE-2018-20856 CVE-2019-6974 CVE-2019-11599 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. 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 Server AUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856) * Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974) * kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853) * kernel: TLB flush happens too late on mremap (CVE-2018-18281) * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599) 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): * 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. 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/): 1589890 - CVE-2018-10853 kernel: kvm: guest userspace to guest kernel write 1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap 1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() 1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping 1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: kernel-3.10.0-693.62.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm kernel-doc-3.10.0-693.62.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm perf-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: kernel-3.10.0-693.62.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm kernel-doc-3.10.0-693.62.1.el7.noarch.rpm ppc64le: kernel-3.10.0-693.62.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.62.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.62.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.62.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.62.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.62.1.el7.ppc64le.rpm perf-3.10.0-693.62.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm python-perf-3.10.0-693.62.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm x86_64: kernel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm perf-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: kernel-3.10.0-693.62.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.62.1.el7.noarch.rpm kernel-doc-3.10.0-693.62.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-devel-3.10.0-693.62.1.el7.x86_64.rpm kernel-headers-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.62.1.el7.x86_64.rpm perf-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: kernel-debug-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.62.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.62.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.62.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.62.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.62.1.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-2018-10853 https://access.redhat.com/security/cve/CVE-2018-18281 https://access.redhat.com/security/cve/CVE-2018-20856 https://access.redhat.com/security/cve/CVE-2019-6974 https://access.redhat.com/security/cve/CVE-2019-11599 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXh3j4tzjgjWX9erEAQgrsA/7BKPcBbg2RX7I5HWuL2oC26IWdlrmbC+9 3wjegJPnhVuPkRXGWb7fCC4yVe4VjoeVRBN2HRCsyU4q9d9oPnVwldrRwzElGQdJ v93Ac7aOwy4fZMD8rwukWaPd9OmQnT/hM7cLAbozSqL+tBRo1G2fjuE1sBscIZDB qFHqRWA/nup6Qm8miiz/vnnEZCukXRMzgk8NO6jMjUR0TQ65hMZc0TTrElZZ99Z6 Bcm7C2nnw3CK0ewJewxPS21d/r4Rs7dpGF/6xjnsAzSPpO6HhzBmSTDoHe8uhsz7 lfjh79KcljPTe+mG1iO0E4l9aNnpNRWd7XZ4JVpQw6Ne47XGTMiybLivfPKo141q WlyfSdxxgyPZjI1xejmt/eqLiliTiuTj65Hlf8yn76DZOCGg22KZUNg1K8U/RWGz mlM34oeozfamjRNXYAibIW9zW65Y9DZ+sM6NLVulcYFGkqsX/t5yE3otkMUzDilK 6nLnXZ7Uu8jJz89mLWcNVY/mKBFP5WNsyZdThFt4q7koNwwNviHDSzQzyTTsgMwd P7sBoOYpqevd+WA/qS103ZyrEurjM/yFbNcbQDJcrT9SgV00YBzAkyGXz4IJ5Jy9 0DNYTkOwKhfbG+WLfQwvfL9FYv5TkkjHy6BIcOjzbQXM/pQAR5AybYOPROoi/Q7R R0SZU3D8SVo=IHlt -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce