-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2018:0399-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0399 Issue date: 2018-03-06 CVE Names: CVE-2017-8824 ===================================================================== 1. Summary: Updated kernel packages that fix six bugs are now available for Red Hat Enterprise Linux 7.3 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. 7.3) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.3) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.3) - ppc64, ppc64le, 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, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Previously, there were cases where the ethtool kernel code called the vzalloc() function, which allocates virtually contiguous memory with zero fill, with a size of zero. Consequently, running the ethtool -d command to query hardware registers led to the following dmesg error: ethtool: vmalloc: allocation failure: 0 bytes, mode:0x24080c2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_ZERO) With this update, the kernel code has been fixed to avoid the invalid vzalloc call, and the dmesg error no longer occurs. (BZ#1530128) * Previously, if an NFSv4 mount operation encountered an NFS client structure that has not completed initialization, the trunking detection logic waited for the operation to complete. Consequently, if a concurrent NFSv4 mount operation added another item to the list of NFS client structures, this client was not able to begin initialization, because it was waiting on the mutex held by the other process, and a deadlock occurred. This update fixes NFS to wait until the NFS client structure initialization is completed before adding a new structure to the list. As a result, the deadlock no longer occurs, and the NFS client can now initialize as expected under the described circumstances. (BZ#1530134) * If the Extensible Firmware Interface (EFI) created a new set of page tables and mapped a segment of code at a low address, the operating system (OS) failed to boot. This update fixes the EFI code, and the OS now boots as expected under the described circumstances. (BZ#1535880) * The Return Trampoline (Retpoline) mechanism mitigates the branch target injection, also known as the Spectre variant 2 vulnerability. With this update, Retpoline has been implemented into the Red Hat Enterprise Linux kernel. (BZ#1539648) * This update adds a new line to the /proc/cpuinfo file to show all available facilities that are reported by the stfle instruction on IBM z systems. (BZ#1540088) 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 ComputeNode EUS (v. 7.3): Source: kernel-3.10.0-514.44.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.44.1.el7.noarch.rpm kernel-doc-3.10.0-514.44.1.el7.noarch.rpm x86_64: kernel-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.44.1.el7.x86_64.rpm kernel-devel-3.10.0-514.44.1.el7.x86_64.rpm kernel-headers-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.44.1.el7.x86_64.rpm perf-3.10.0-514.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm python-perf-3.10.0-514.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3): x86_64: kernel-debug-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.3): Source: kernel-3.10.0-514.44.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.44.1.el7.noarch.rpm kernel-doc-3.10.0-514.44.1.el7.noarch.rpm ppc64: kernel-3.10.0-514.44.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-514.44.1.el7.ppc64.rpm kernel-debug-3.10.0-514.44.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-514.44.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-514.44.1.el7.ppc64.rpm kernel-devel-3.10.0-514.44.1.el7.ppc64.rpm kernel-headers-3.10.0-514.44.1.el7.ppc64.rpm kernel-tools-3.10.0-514.44.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-514.44.1.el7.ppc64.rpm perf-3.10.0-514.44.1.el7.ppc64.rpm perf-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm python-perf-3.10.0-514.44.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-514.44.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debug-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-514.44.1.el7.ppc64le.rpm kernel-devel-3.10.0-514.44.1.el7.ppc64le.rpm kernel-headers-3.10.0-514.44.1.el7.ppc64le.rpm kernel-tools-3.10.0-514.44.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-514.44.1.el7.ppc64le.rpm perf-3.10.0-514.44.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm python-perf-3.10.0-514.44.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm s390x: kernel-3.10.0-514.44.1.el7.s390x.rpm kernel-debug-3.10.0-514.44.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-514.44.1.el7.s390x.rpm kernel-debug-devel-3.10.0-514.44.1.el7.s390x.rpm kernel-debuginfo-3.10.0-514.44.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-514.44.1.el7.s390x.rpm kernel-devel-3.10.0-514.44.1.el7.s390x.rpm kernel-headers-3.10.0-514.44.1.el7.s390x.rpm kernel-kdump-3.10.0-514.44.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-514.44.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-514.44.1.el7.s390x.rpm perf-3.10.0-514.44.1.el7.s390x.rpm perf-debuginfo-3.10.0-514.44.1.el7.s390x.rpm python-perf-3.10.0-514.44.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.s390x.rpm x86_64: kernel-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.44.1.el7.x86_64.rpm kernel-devel-3.10.0-514.44.1.el7.x86_64.rpm kernel-headers-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.44.1.el7.x86_64.rpm perf-3.10.0-514.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm python-perf-3.10.0-514.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.3): ppc64: kernel-debug-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-514.44.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-514.44.1.el7.ppc64.rpm perf-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-514.44.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-514.44.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-514.44.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.44.1.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 iD8DBQFanu2qXlSAg2UNWIIRAiWCAJ471qmzHLrctfCa9wRWt/GWV+EBpwCgu0oy vDFOs2lOlJLVf3LDYHj7ZKA= =yK3E -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce