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Red Hat Enterprise Linux 6.7 RHSA-2018:2250-01 Important Kernel Fix

An update for kernel is now available for Red Hat Enterprise Linux 6.7 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,. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2018:2250-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2250 Issue date: 2018-07-24 CVE Names: CVE-2018-3639 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.7 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 HPC Node EUS (v. 6.7) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, 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 intothe 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, x86 AMD) 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): * If the cifs_reopen_file() function failed to find a file, the pointer to the cifsFileInfo structure was not reinitialized by being set to "NULL". Subsequently, the find_writable_file() function used an invalid pointer to cifsFileInfo. Consequently, the operating system terminated unexpectedly. With this update, the underlying source code has been fixed to reinitialize the pointer to cifsFileInfo as expected. As a result, the operating system no longer crashes due to this bug. (BZ#1577086) 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 HPC Node EUS (v.6.7): Source: kernel-2.6.32-573.60.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-573.60.1.el6.noarch.rpm kernel-doc-2.6.32-573.60.1.el6.noarch.rpm kernel-firmware-2.6.32-573.60.1.el6.noarch.rpm x86_64: kernel-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.60.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.60.1.el6.x86_64.rpm kernel-devel-2.6.32-573.60.1.el6.x86_64.rpm kernel-headers-2.6.32-573.60.1.el6.x86_64.rpm perf-2.6.32-573.60.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7): x86_64: kernel-debug-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.60.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm python-perf-2.6.32-573.60.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v.6.7): Source: kernel-2.6.32-573.60.1.el6.src.rpm i386: kernel-2.6.32-573.60.1.el6.i686.rpm kernel-debug-2.6.32-573.60.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.60.1.el6.i686.rpm kernel-devel-2.6.32-573.60.1.el6.i686.rpm kernel-headers-2.6.32-573.60.1.el6.i686.rpm perf-2.6.32-573.60.1.el6.i686.rpm perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-573.60.1.el6.noarch.rpm kernel-doc-2.6.32-573.60.1.el6.noarch.rpm kernel-firmware-2.6.32-573.60.1.el6.noarch.rpm ppc64: kernel-2.6.32-573.60.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-573.60.1.el6.ppc64.rpm kernel-debug-2.6.32-573.60.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-573.60.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.60.1.el6.ppc64.rpm kernel-devel-2.6.32-573.60.1.el6.ppc64.rpm kernel-headers-2.6.32-573.60.1.el6.ppc64.rpm perf-2.6.32-573.60.1.el6.ppc64.rpm perf-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm s390x: kernel-2.6.32-573.60.1.el6.s390x.rpm kernel-debug-2.6.32-573.60.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.s390x.rpm kernel-debug-devel-2.6.32-573.60.1.el6.s390x.rpm kernel-debuginfo-2.6.32-573.60.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.60.1.el6.s390x.rpm kernel-devel-2.6.32-573.60.1.el6.s390x.rpm kernel-headers-2.6.32-573.60.1.el6.s390x.rpm kernel-kdump-2.6.32-573.60.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.60.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-573.60.1.el6.s390x.rpm perf-2.6.32-573.60.1.el6.s390x.rpm perf-debuginfo-2.6.32-573.60.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.s390x.rpm x86_64: kernel-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.60.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.60.1.el6.x86_64.rpm kernel-devel-2.6.32-573.60.1.el6.x86_64.rpm kernel-headers-2.6.32-573.60.1.el6.x86_64.rpm perf-2.6.32-573.60.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v.6.7): i386: kernel-debug-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.60.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.60.1.el6.i686.rpm perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm python-perf-2.6.32-573.60.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.60.1.el6.ppc64.rpm perf-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm python-perf-2.6.32-573.60.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-573.60.1.el6.s390x.rpm kernel-debuginfo-2.6.32-573.60.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.60.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.60.1.el6.s390x.rpm perf-debuginfo-2.6.32-573.60.1.el6.s390x.rpm python-perf-2.6.32-573.60.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.60.1.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.60.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.60.1.el6.x86_64.rpm python-perf-2.6.32-573.60.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.60.1.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-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 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: GnuPGv1 iQIVAwUBW1d04tzjgjWX9erEAQjKIQ//biFOluTX9bArtuTe1p2E9FuYhrTufIU+ 0B0uTHuYJXDgldUkKp2kw8HBd8eVH4qJ999xQGCFz6X/qVxMNQtHGP5WoExA9R15 NNY0CaBR4jLfr6c0hiNnuSwg1OPuj4dWQoMkMPmfB1vD1CI61LXD7cnkr/medHid +Y01heygrsHE9r7DmpHow8HWB3BWH3piWPWx2210oKEgsCZZY+c3y2XOfHbiXM4R VNrSDI/IU9dag90jdVPnC4sf8RSZpSGAHur7wPuoX90Dn4Ehymqe20WWaQJf4F4B W03rZ6Xxpaj/EU8+cWH39sl4QOtBoXW16WkGNe3KoYZai1KGbwwIB9CztdQLLnx+ feijQM6AJqyVkycdMpKNglxyu3MJ6jLjHmnd+ePjBKKAF06FoZU8SOIjMLbacFWt 0AMfVieNgflU18WQD062sQ/sjMEA4i8pAaTwng5Y3wZqCw9tClopOeF1Gss0RC++ 32tjIkvqhAvicEAO+/Alu4HNtXTDhfBKH7pQZhp3/sXXcp+YExP3AOnU/gOejnaM TLAAmfhottQP2ER4QYHEnoekDF/x3LUfaA/SFN58DszCnkaEmYbZY5RxlKvVb5bQ CbyIKGMSucSxy5msDT93Z1RtNeP2MLoj+hiD7Nk2Ysy5B/gPwyhUcQo6XEqYJT9B ouXqz1ESC8g=Bltf -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Ubuntu Server 20.04.3 introduces a crucial package refresh that fixes serious vulnerabilities and system errors.. Red Hat Kernel Update, Important Security Advisory, Linux Risk Mitigation, Cache Attack Vulnerability. . Severity: Important. LinuxSecurity.com Team

Jul 24, 2018 •Important Red Hat