-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2018:1651-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1651 Issue date: 2018-05-21 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6. 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 Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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 is required. Please refer to References section for further information about this issue, CPU microcode requirements and the potential performance impact. In this update mitigations for x86 (both 32 and 64 bit) architecture are 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): * Previously, an erroneous code in the x86 kexec system call path caused a memory corruption. As a consequence, the system became unresponsive with the following kernel stack trace: 'WARNING: CPU: 13 PID: 36409 at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0 list_del corruption. prev->next should be ffffdd03fddeeca0, but was (null)' This update ensures that the code does not corrupt memory. As a result, the operating system no longer hangs. (BZ#1573176) 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 Desktop (v. 6): Source: kernel-2.6.32-696.30.1.el6.src.rpm i386: kernel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-devel-2.6.32-696.30.1.el6.i686.rpm kernel-headers-2.6.32-696.30.1.el6.i686.rpm perf-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.30.1.el6.noarch.rpm kernel-doc-2.6.32-696.30.1.el6.noarch.rpm kernel-firmware-2.6.32-696.30.1.el6.noarch.rpm x86_64: kernel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm kernel-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-headers-2.6.32-696.30.1.el6.x86_64.rpm perf-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-696.30.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-696.30.1.el6.noarch.rpm kernel-doc-2.6.32-696.30.1.el6.noarch.rpm kernel-firmware-2.6.32-696.30.1.el6.noarch.rpm x86_64: kernel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm kernel-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-headers-2.6.32-696.30.1.el6.x86_64.rpm perf-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-696.30.1.el6.src.rpm i386: kernel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-devel-2.6.32-696.30.1.el6.i686.rpm kernel-headers-2.6.32-696.30.1.el6.i686.rpm perf-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.30.1.el6.noarch.rpm kernel-doc-2.6.32-696.30.1.el6.noarch.rpm kernel-firmware-2.6.32-696.30.1.el6.noarch.rpm ppc64: kernel-2.6.32-696.30.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-696.30.1.el6.ppc64.rpm kernel-debug-2.6.32-696.30.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-696.30.1.el6.ppc64.rpm kernel-devel-2.6.32-696.30.1.el6.ppc64.rpm kernel-headers-2.6.32-696.30.1.el6.ppc64.rpm perf-2.6.32-696.30.1.el6.ppc64.rpm perf-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm s390x: kernel-2.6.32-696.30.1.el6.s390x.rpm kernel-debug-2.6.32-696.30.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.s390x.rpm kernel-debug-devel-2.6.32-696.30.1.el6.s390x.rpm kernel-debuginfo-2.6.32-696.30.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-696.30.1.el6.s390x.rpm kernel-devel-2.6.32-696.30.1.el6.s390x.rpm kernel-headers-2.6.32-696.30.1.el6.s390x.rpm kernel-kdump-2.6.32-696.30.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-696.30.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-696.30.1.el6.s390x.rpm perf-2.6.32-696.30.1.el6.s390x.rpm perf-debuginfo-2.6.32-696.30.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.s390x.rpm x86_64: kernel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm kernel-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-headers-2.6.32-696.30.1.el6.x86_64.rpm perf-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-696.30.1.el6.ppc64.rpm perf-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm python-perf-2.6.32-696.30.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-696.30.1.el6.s390x.rpm kernel-debuginfo-2.6.32-696.30.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-696.30.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-696.30.1.el6.s390x.rpm perf-debuginfo-2.6.32-696.30.1.el6.s390x.rpm python-perf-2.6.32-696.30.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-696.30.1.el6.src.rpm i386: kernel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-devel-2.6.32-696.30.1.el6.i686.rpm kernel-headers-2.6.32-696.30.1.el6.i686.rpm perf-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.30.1.el6.noarch.rpm kernel-doc-2.6.32-696.30.1.el6.noarch.rpm kernel-firmware-2.6.32-696.30.1.el6.noarch.rpm x86_64: kernel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm kernel-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-headers-2.6.32-696.30.1.el6.x86_64.rpm perf-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.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: GnuPG v1 iQIVAwUBWwQpYNzjgjWX9erEAQiwQw/9HSTTORv6JOr7kVAuzuRjn3AMVdTab57O 4wCDG9CwZQ+y+8sSZzGOZUsKwiBhLRA6FTkm/iI3rbTX9LmG2zNt7PjFMpKM7hr9 +H8O30KbTTpLr5H/rxrYGxbfw04Cv17FrW4c6hEgUhmF92qLZP5OiWJmg87GVd2s ioXnVbvODvHBE61c244bpbIDeJiqrrrkxClFGT+6b2rDmS2cJL7MpIpGwFbVVI3v MCi52/3s2tNwmzeOSbxvoGwe7Y4IILMeR/cx6MmI741YYu0l0u/TO0J6wJWnDWMt 3IKflBW2f57VSW/0iLuFQF6nMPqO3N23mq8u7nlMfXWJmVtwejRc7P2IMj+TjcZN DuEVIn2iKEIiXKWr/griqa8OuBWzk2JkL9SUNXIQY2ri/xKZ+7x+aZGZVKqE5reo FVeMohkZvpmjwSt7/EklrbQUDGRAEigLHbf9pRsrAsfl2SWtDD+wMfAXqaJhw9Pj XC+8yS5dXxjkN7S9yoiObF/agku7c9QEgbhVwNZ+1bnhVuZdRsC62Q1JCTS3l+Hb ZYbwbks64QdWfH4HF4wG3WE2D4tBX1BezOCPLS6j8cQvfeCzg1VaEKVE20D8sZw1 8+plqvIKA+u2rqF1dKYlZLC/kBOA4rEouZNhJ5h4prlFa/wGrHgNLnc+N/mNH5xo WcrypVXeB0k= =LQGQ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce