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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0245 Important: kernel security, bug fix, and enhancement update 30 January 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Root Compromise -- Existing Account Modify Arbitrary Files -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-18559 CVE-2018-18397 Reference: ESB-2019.0207 Original Bulletin: https://access.redhat.com/errata/RHSA-2019:0163 https://access.redhat.com/errata/RHSA-2019:0202 Comment: This advisory references vulnerabilities in the Linux kernel that also affect distributions other than Red Hat. It is recommended that administrators running Linux check for an updated version of the kernel for their system. This bulletin contains two (2) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2019:0163-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0163 Issue date: 2019-01-29 CVE Names: CVE-2018-18397 CVE-2018-18559 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7. 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 Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 due to race condition in AF_PACKET implementation (CVE-2018-18559) * kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397) 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. Bug Fix(es): These updated kernel packages include also numerous bug fixes and enhancements. Space precludes documenting all of the bug fixes in this advisory. See the descriptions in the related Knowledge Article: https://access.redhat.com/articles/3827321 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/): 1641548 - CVE-2018-18397 kernel: userfaultfd bypasses tmpfs file permissions 1641878 - CVE-2018-18559 kernel: Use-after-free due to race condition in AF_PACKET implementation 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: kernel-3.10.0-957.5.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm kernel-doc-3.10.0-957.5.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.5.1.el7.x86_64.rpm kernel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm perf-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: kernel-3.10.0-957.5.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm kernel-doc-3.10.0-957.5.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.5.1.el7.x86_64.rpm kernel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm perf-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: kernel-3.10.0-957.5.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm kernel-doc-3.10.0-957.5.1.el7.noarch.rpm ppc64: kernel-3.10.0-957.5.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-957.5.1.el7.ppc64.rpm kernel-debug-3.10.0-957.5.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.5.1.el7.ppc64.rpm kernel-devel-3.10.0-957.5.1.el7.ppc64.rpm kernel-headers-3.10.0-957.5.1.el7.ppc64.rpm kernel-tools-3.10.0-957.5.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.ppc64.rpm perf-3.10.0-957.5.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm python-perf-3.10.0-957.5.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-957.5.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debug-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.5.1.el7.ppc64le.rpm kernel-devel-3.10.0-957.5.1.el7.ppc64le.rpm kernel-headers-3.10.0-957.5.1.el7.ppc64le.rpm kernel-tools-3.10.0-957.5.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-957.5.1.el7.ppc64le.rpm perf-3.10.0-957.5.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm python-perf-3.10.0-957.5.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm s390x: kernel-3.10.0-957.5.1.el7.s390x.rpm kernel-debug-3.10.0-957.5.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.s390x.rpm kernel-debug-devel-3.10.0-957.5.1.el7.s390x.rpm kernel-debuginfo-3.10.0-957.5.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-957.5.1.el7.s390x.rpm kernel-devel-3.10.0-957.5.1.el7.s390x.rpm kernel-headers-3.10.0-957.5.1.el7.s390x.rpm kernel-kdump-3.10.0-957.5.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-957.5.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-957.5.1.el7.s390x.rpm perf-3.10.0-957.5.1.el7.s390x.rpm perf-debuginfo-3.10.0-957.5.1.el7.s390x.rpm python-perf-3.10.0-957.5.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.s390x.rpm x86_64: bpftool-3.10.0-957.5.1.el7.x86_64.rpm kernel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm perf-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.5.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.5.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: kernel-3.10.0-957.5.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm kernel-doc-3.10.0-957.5.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.5.1.el7.x86_64.rpm kernel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm perf-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.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-2018-18397 https://access.redhat.com/security/cve/CVE-2018-18559 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. - ------------------------------------------------------------------------------ ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2019:0202-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0202 Issue date: 2019-01-29 CVE Names: CVE-2018-18397 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.5 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. 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. 7.5) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397) 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. Bug Fix(es): * When applying two instances of the kprobe debugging mechanism to the same function, one of the kprobes in some cases failed, depending on the kernel address space layout. Consequently, a kprobe registration error occurred. This update fixes the bug in the kprobes registration code to properly detect and handle ftrace-based kprobes. As a result, both kprobes now apply successfully in the described scenario. (BZ#1647815) * Under heavy mad packet load, the SELinux checks in the mad packet queries for InfiniBand (IB) fabrics significantly increased the mad packet execution time. Consequently, if a single machine was executing a large perfquery to the IB switches of a High Performance (HPC) fabric, mad_rpc timeouts occurred, and the query failed even with SELinux disabled. This update eliminates the SELinux checks when SELinux is disabled. As a result, the mad packet queries through perfquery now have their original run times when SELinux is disabled. (BZ#1648810) * Previously, a file-system shutdown process caused by an I/O error could race against a running fstrim process to acquire a xfs buffer lock. Consequently, the file-system shutdown process never completed due to a deadlock and the file-system became unresponsive, unable to be unmounted. This update fixes the lock ordering so that the deadlock no longer occurs and the file-system shutdown process now completes in the described scenario. (BZ#1657142) 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/): 1641548 - CVE-2018-18397 kernel: userfaultfd bypasses tmpfs file permissions 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.5): Source: kernel-3.10.0-862.27.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-862.27.1.el7.noarch.rpm x86_64: kernel-devel-3.10.0-862.27.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5): x86_64: kernel-debug-debuginfo-3.10.0-862.27.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.5): Source: kernel-3.10.0-862.27.1.el7.src.rpm noarch: kernel-doc-3.10.0-862.27.1.el7.noarch.rpm ppc64: kernel-debuginfo-common-ppc64-3.10.0-862.27.1.el7.ppc64.rpm ppc64le: python-perf-debuginfo-3.10.0-862.27.1.el7.ppc64le.rpm s390x: python-perf-debuginfo-3.10.0-862.27.1.el7.s390x.rpm x86_64: python-perf-debuginfo-3.10.0-862.27.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.5): ppc64: kernel-debug-debuginfo-3.10.0-862.27.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-862.27.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-862.27.1.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-2018-18397 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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