-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2018:1738-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1738 Issue date: 2018-05-29 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended 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 ComputeNode EUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - noarch, ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639) Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software side of the mitigation for this hardware issue. To be fully functional, up-to-date CPU microcode applied on the system might be required. Please refer to References section for further information about this issue, CPU microcode requirements and the potential performance impact. In this update, mitigation for PowerPC architecture is provided. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue. Bug Fix(es): These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3449601 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/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.4): Source: kernel-3.10.0-693.33.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.33.1.el7.noarch.rpm kernel-doc-3.10.0-693.33.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.33.1.el7.x86_64.rpm kernel-devel-3.10.0-693.33.1.el7.x86_64.rpm kernel-headers-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.33.1.el7.x86_64.rpm perf-3.10.0-693.33.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm python-perf-3.10.0-693.33.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.33.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.4): Source: kernel-3.10.0-693.33.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.33.1.el7.noarch.rpm kernel-doc-3.10.0-693.33.1.el7.noarch.rpm ppc64: kernel-3.10.0-693.33.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.33.1.el7.ppc64.rpm kernel-debug-3.10.0-693.33.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.33.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.33.1.el7.ppc64.rpm kernel-devel-3.10.0-693.33.1.el7.ppc64.rpm kernel-headers-3.10.0-693.33.1.el7.ppc64.rpm kernel-tools-3.10.0-693.33.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.33.1.el7.ppc64.rpm perf-3.10.0-693.33.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm python-perf-3.10.0-693.33.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-693.33.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.33.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.33.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.33.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.33.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.33.1.el7.ppc64le.rpm perf-3.10.0-693.33.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm python-perf-3.10.0-693.33.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm s390x: kernel-3.10.0-693.33.1.el7.s390x.rpm kernel-debug-3.10.0-693.33.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.33.1.el7.s390x.rpm kernel-debug-devel-3.10.0-693.33.1.el7.s390x.rpm kernel-debuginfo-3.10.0-693.33.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.33.1.el7.s390x.rpm kernel-devel-3.10.0-693.33.1.el7.s390x.rpm kernel-headers-3.10.0-693.33.1.el7.s390x.rpm kernel-kdump-3.10.0-693.33.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.33.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.33.1.el7.s390x.rpm perf-3.10.0-693.33.1.el7.s390x.rpm perf-debuginfo-3.10.0-693.33.1.el7.s390x.rpm python-perf-3.10.0-693.33.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.s390x.rpm x86_64: kernel-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.33.1.el7.x86_64.rpm kernel-devel-3.10.0-693.33.1.el7.x86_64.rpm kernel-headers-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.33.1.el7.x86_64.rpm perf-3.10.0-693.33.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm python-perf-3.10.0-693.33.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.4): noarch: kernel-doc-3.10.0-693.33.1.el7.noarch.rpm ppc64: kernel-debug-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.33.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.33.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.33.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.33.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.33.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.33.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.33.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.33.1.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-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd https://access.redhat.com/articles/3449601 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 iQIVAwUBWw3HGNzjgjWX9erEAQjcMw//T7hQVhd3RKhpMDZO6/e9tFSApQ4kEwGI lcdjw5L2ZReI41F+J6VKDuQlB/bhuvJpuzF2D5gXHtVPpNbgp1m1Kga1upFDEwAY kHGvHrwS0SJ/atqFQUAOGBPMbTcVIzo7yK7rD8SyyqlE3aZ4vixVS8I05IDD/MG/ qL2M4eymRl08EB7ylVQpjuCTrInuj8tSjxYatrFHXWPj0pd+cQbmc4dGfFsf8xwL VmUWPFmAyx5VYGw613iAP53aGv0ODFjlS+EyNx5lskNfIXBeZJMhycDOXc3k/YNA wnt/cQ30V4c60iGwRzeZO6+O6GW9CsIG/z/P08z4Eq7T92kszb7iqvZzViVo11+r JzPpfuRbXL/a5umCV7DimS0/wHE9dDJaV9LItYdM9tIRS24KMECU4D3FPzNXTjVI 6Ycc3u4kkd0DIlMGGQBgQkaxjysHkmix0Cg2lj709FjbeiCqXYrRrF//MwAxOyWD O8A8OtlCJYWgYIvT7h/fTT8uqaUSsBl4MBEWYbVjSVqbrpNxDthLGBr7YUBnCo6U JKAmaBSZZrVJ0f6Ri8PnMXR0iyocGQja3w3Cu+fhF2ihRNHiBxVb3hNvkSzXCvRb OwtANbgZBVXb7gPLxcnbec1ZhpwSflyq4fxqtpyBO/vXgodDU9TecHF+YyElZ2c7 RT4U8Zxe5Jc= =VULp -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce