-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2019:0324-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0324 Issue date: 2019-02-12 CVE Names: CVE-2018-18397 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 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. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - 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): * The timeout handling in the libfc.ko kernel module did not work correctly. This was happening during certain steps of the Fibre Channel login procedure, when the timeout handling was not synchronized with the state of a partially offloaded Fibre Channel over Ethernet (FCoE) in the lower-level driver. Consequently, the offloaded FCoE state was incorrect, which led to I/O timeout errors until the SCSI error recovery issued a host reset. This update fixes the bug by improving the libfc.ko error handling during the fabric login. As a result, the fabric login errors are addressed in time, without the I/O timeouts in the described scenario. (BZ#1655042) * Symmetric Multi-Processing (SMP) or Non-Uniform Memory Access (NUMA) systems in some cases experienced deadlocks during a task migration and task wakeup operations. Consequently, the systems terminated unexpectedly with the following message: NMI watchdog: Watchdog detected hard LOCKUP on This update fixes the bug by queueing the stopper thread to run after locks are released. As a result, the deadlocks and the system crashes no longer occur in the described scenario. (BZ#1667326) Users of kernel are advised to upgrade to these updated packages, which fix these bugs. 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. 7.4): Source: kernel-3.10.0-693.44.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.44.1.el7.noarch.rpm kernel-doc-3.10.0-693.44.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.44.1.el7.x86_64.rpm kernel-devel-3.10.0-693.44.1.el7.x86_64.rpm kernel-headers-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.44.1.el7.x86_64.rpm perf-3.10.0-693.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm python-perf-3.10.0-693.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.4): Source: kernel-3.10.0-693.44.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.44.1.el7.noarch.rpm kernel-doc-3.10.0-693.44.1.el7.noarch.rpm ppc64: kernel-3.10.0-693.44.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.44.1.el7.ppc64.rpm kernel-debug-3.10.0-693.44.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.44.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.44.1.el7.ppc64.rpm kernel-devel-3.10.0-693.44.1.el7.ppc64.rpm kernel-headers-3.10.0-693.44.1.el7.ppc64.rpm kernel-tools-3.10.0-693.44.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.44.1.el7.ppc64.rpm perf-3.10.0-693.44.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm python-perf-3.10.0-693.44.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-693.44.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.44.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.44.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.44.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.44.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.44.1.el7.ppc64le.rpm perf-3.10.0-693.44.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm python-perf-3.10.0-693.44.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm s390x: kernel-3.10.0-693.44.1.el7.s390x.rpm kernel-debug-3.10.0-693.44.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.44.1.el7.s390x.rpm kernel-debug-devel-3.10.0-693.44.1.el7.s390x.rpm kernel-debuginfo-3.10.0-693.44.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.44.1.el7.s390x.rpm kernel-devel-3.10.0-693.44.1.el7.s390x.rpm kernel-headers-3.10.0-693.44.1.el7.s390x.rpm kernel-kdump-3.10.0-693.44.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.44.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.44.1.el7.s390x.rpm perf-3.10.0-693.44.1.el7.s390x.rpm perf-debuginfo-3.10.0-693.44.1.el7.s390x.rpm python-perf-3.10.0-693.44.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.s390x.rpm x86_64: kernel-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.44.1.el7.x86_64.rpm kernel-devel-3.10.0-693.44.1.el7.x86_64.rpm kernel-headers-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.44.1.el7.x86_64.rpm perf-3.10.0-693.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm python-perf-3.10.0-693.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.4): ppc64: kernel-debug-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.44.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.44.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.44.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.44.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.44.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.44.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.44.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.44.1.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-2018-18397 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXGLmSNzjgjWX9erEAQjnpQ//U5wpnp7lO4Gq6YvVl0KSLroGP9Mg9Ucc RERyDs7lgdGAO41FMWT4YXRPxPlFteCULPXlQrKZL9Et5YkIy2u7hzp3KnMN6RsM ayX5dM3TNz+/IphNQhqsNHR9P1s5tXlBuy43cHpRb7/zpRvwtav+k9jzBhedFE4J f8LiixBs/IpDYiaaBfI06pMbEtUBur5SvR+M3X22aLPDZskyOuj86DCTnvnzGOfm I0SP/aOZC68y23GIdUlQrzpchOgPhaXxFqVFseMSL4lA5JAEY6rxSesSSDqLAqCp cxhB+1bXgB+8WQTj1a3MNZPk5nW6uzxhrzN2841y3oV4W77hjIjIzEKzTw2E/kPm Q2+Xidktl6f3FE7ExAzkUlI+PrXcgTYyKt4w/4VnhUwixSqVzdoJoQSm0eNLF1mZ ZGb+lmZYxnd+9l4SjIb+dEsCLk4vTafSPHiCDS3QcDaX/0Bdq62yQSWB8Evg4Hp2 C7kbZVC4MVU0ixSX4uSXXzRDNK/dTAuVRVGCErcRpwA8w/tLC8lrcVyr55yK9pyP I7sZ27aMHq2pmvzP8rIaTrAU0zUKPz/XV9i3k56Sdb48m4HWCHOW9GtvbEHTnMVa f599Y3zLzauUeIE7WeL1k51d5ztIfrlHWSoLonNShGrHQlWkKhOVRGKZlkxR7jC7 7RFBXzlVQ9M=xr6e -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce