-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:2393-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2393 Issue date: 2018-08-14 CVE Names: CVE-2018-3620 CVE-2018-3646 CVE-2018-10901 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. 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. 6.5) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. The L1TF issue was found in the way the x86 microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimisation) in combination with handling of page-faults caused by terminated virtual to physical address resolving process. As a result, an unprivileged attacker could use this flaw to read privileged memory of the kernel or other processes and/or cross guest/host boundaries to read host memory by conducting targeted cache side-channel attacks. (CVE-2018-3620, CVE-2018-3646) * kernel: kvm: vmx: host GDT limit corruption (CVE-2018-10901) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Intel OSSIRT (Intel.com) for reporting CVE-2018-3620 and CVE-2018-3646 and Vegard Nossum (Oracle Corporation) for reporting CVE-2018-10901. 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/): 1585005 - CVE-2018-3646 Kernel: hw: cpu: L1 terminal fault (L1TF) 1601849 - CVE-2018-10901 kernel: kvm: vmx: host GDT limit corruption 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.5): Source: kernel-2.6.32-431.91.3.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-431.91.3.el6.noarch.rpm kernel-doc-2.6.32-431.91.3.el6.noarch.rpm kernel-firmware-2.6.32-431.91.3.el6.noarch.rpm x86_64: kernel-2.6.32-431.91.3.el6.x86_64.rpm kernel-debug-2.6.32-431.91.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.91.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.91.3.el6.x86_64.rpm kernel-devel-2.6.32-431.91.3.el6.x86_64.rpm kernel-headers-2.6.32-431.91.3.el6.x86_64.rpm perf-2.6.32-431.91.3.el6.x86_64.rpm perf-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.5): Source: kernel-2.6.32-431.91.3.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.91.3.el6.x86_64.rpm perf-debuginfo-2.6.32-431.91.3.el6.x86_64.rpm python-perf-2.6.32-431.91.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.91.3.el6.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-2018-3620 https://access.redhat.com/security/cve/CVE-2018-3646 https://access.redhat.com/security/cve/CVE-2018-10901 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/L1TF 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBW3M5O9zjgjWX9erEAQicLRAAmH/tiDJjTUWfNpgAGVQv1+TQ2Ffsj2wM TSFOnty270ABJyA8gzMS4Xw+FpkSi3V0JdEzSLTGTnn3N6BzX8mwSxK6xFOsLEHJ t4K+3J8dhGSsuN8zEVwmBSdzUZyTd8UwpiZCINhqn/+TPYYKiyMOUqf+hd3MWZK1 KNjD/IWxVR0LbiEbr9Q82ZzPiz1KdnA9eyTaHZgt06ccno41yXfWmzol2x9k+1ud Y47mg6d21kviGZdO9tfnu7fxCnni+pemtExvybpDjn5AUF83piGNCTuSQlrf7NQD 0rmrAWFJIZdtIsiDbJ5+YwqG1HRfabrV4q2qBZtQKcGIZKAYpSvy9lEgTLRmSayj 9Tm74gYsczFIv9RcF1bfV5WENQSXpUgNi8pfzJ6+qFQywFI5tfQQyyijBV42X5+l JHD4xNW7/3DRijo6dh7xF2FzYuTXcxsTJHN+mBxBNyQB8hhaSekvey65XiW6gwI2 bkk6V5aUL3qynyCCv3Rt5V3OoeVNvf6nZR5xpVLn9Ir/NS9+Y6etwMC+rBGUK4+A GnirVCUHWwIYzP4x8k6hE1Zu98ePfULaqJ8G+A2WYnoea1YioDjD0FKvLrMpeCCE Kcserfi8dLTpWMAjNWKHvxmxQwFrK/agsPLu6An+OujmwgjK3vRxVxpc7Nr0UKf/ zu6BwOQ3xTs=Kogf -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce