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Red Hat Enterprise Linux 7.2 RHSA-2018:1216-01 CVE-2017-8824 Important Socket Issue

An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2018:1216-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1216 Issue date: 2018-04-24 CVE Names: CVE-2017-8824 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions. 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. 7.2) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.2) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.2) - noarch, 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 vulnerability in DCCP socket (CVE-2017-8824, Important) 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 Referencessection. Red Hat would like to thank Mohamed Ghannam for reporting this issue. Bug Fix(es): * Previously, the XFS code included a circular dependency between the xfs-log and the xfs-cil workqueues. Consequently, an XFS deadlock occurred in some cases. This update adds a new workqueue dedicated to the log covering background task to avoid the deadlock. (BZ#1543303) * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1553181) 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/): 1519591 - CVE-2017-8824 kernel: Use-after-free vulnerability in DCCP socket 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.2): Source: kernel-3.10.0-327.66.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.66.1.el7.noarch.rpm kernel-doc-3.10.0-327.66.1.el7.noarch.rpm x86_64: kernel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-headers-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.66.1.el7.x86_64.rpm perf-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm Red HatEnterprise Linux Server E4S (v. 7.2): Source: kernel-3.10.0-327.66.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.66.1.el7.noarch.rpm kernel-doc-3.10.0-327.66.1.el7.noarch.rpm ppc64le: kernel-3.10.0-327.66.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debug-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.66.1.el7.ppc64le.rpm kernel-devel-3.10.0-327.66.1.el7.ppc64le.rpm kernel-headers-3.10.0-327.66.1.el7.ppc64le.rpm kernel-tools-3.10.0-327.66.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-327.66.1.el7.ppc64le.rpm perf-3.10.0-327.66.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm python-perf-3.10.0-327.66.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm x86_64: kernel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-headers-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.66.1.el7.x86_64.rpm perf-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm Red Hat Enterprise Linux Server TUS (v.7.2): Source: kernel-3.10.0-327.66.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.66.1.el7.noarch.rpm kernel-doc-3.10.0-327.66.1.el7.noarch.rpm x86_64: kernel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-devel-3.10.0-327.66.1.el7.x86_64.rpm kernel-headers-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.66.1.el7.x86_64.rpm perf-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.2): x86_64: kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v.7.2): ppc64le: kernel-debug-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.66.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-327.66.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.2): x86_64: kernel-debug-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.66.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.66.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.66.1.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-2017-8824 https://access.redhat.com/security/updates/classification/#important 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 iD8DBQFa30o5XlSAg2UNWIIRAomSAJ9td+ZOVuNEzxI9lTATorcjPQZDmgCfUcs3 PMZvEDHhPe2XZaEEpppEFp8=e64G -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Ubuntu issues vital kernel patch addressing security vulnerabilities and bugresolutions in 20.04 LTS. System restart necessary.. Kernel Update, Red Hat Advisory, System Security, Linux Kernel Fix. . Severity: Important. LinuxSecurity.com Team

Apr 24, 2018 •Important Red Hat