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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0148 kernel-rt security and bug fix update 16 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Enterprise MRG for RHEL-6 Red Hat Enterprise Linux Server 6 Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-11599 CVE-2018-20856 CVE-2018-18281 Reference: ESB-2020.0068 ESB-2019.4121 ESB-2019.4110 ESB-2019.3997 ESB-2019.1909 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:0100 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2020:0100-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://access.redhat.com/errata/RHSA-2020:0100 Issue date: 2020-01-14 CVE Names: CVE-2018-18281 CVE-2018-20856 CVE-2019-11599 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise MRG 2. 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 MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856) * kernel: TLB flush happens too late on mremap (CVE-2018-18281) * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599) 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): * update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1779367) 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/): 1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap 1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping 1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c 1779367 - update the MRG 2.5.z 3.10 realtime-kernel sources 6. Package List: Red Hat MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.0-693.62.1.rt56.659.el6rt.src.rpm noarch: kernel-rt-doc-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm x86_64: kernel-rt-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.62.1.rt56.659.el6rt.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-2018-18281 https://access.redhat.com/security/cve/CVE-2018-20856 https://access.redhat.com/security/cve/CVE-2019-11599 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 2020 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXh12MtzjgjWX9erEAQjtWBAAh5K8Ruvl6tD2ACeBGlxi7ljhIXffbMU0 aCgpYa/lCMuhiUoMuSG49bCBuE0jLSxLK9QWa4ksEyBySQv6QNb9huOImDx7ELVh qAEgYyU7vW/T9p2gGnFeO9FE9HtHG1xWe8y45vyyDkbq+zUFaEQdFC/8UGQA1TII ALk8uBQ+4A9j6A0ukSGeAt2Te8ra0gp/VXYVP7TRrNBTEvshdFThiyYcTYqmGNz1 LtmlUj9lSEuwKn5yjjq3VYcfUe0xe9Sdyr70g7YJKWw9DwgDLKTte6wHmrUw85Ah 7Nix7UD+ycMSBIckUTqeysbrG1zfTWclRNRAIeESg4ky0CmlLqSL2UKPDsy4StAs N4Ufue4uryLpQlQY0JGk8TbSxjsE5ZMIVUCj9RTnAlSDSM+V0p1f0cftJhiUgj6I 7uRqCABnOySogupuQoWkXUYfgwkwJ920x0HdIHoVK1NubQJug74FYRjRnGGXGjAP aaMf9rFfQmR7XSYiNZeRWumaUoTNrkK91fsVocZeqOkb1/Dcv5eW9LtsMW3s/5qz cdSCnggFg0eCspJTNbBe8sSrOI7RS229YqFqBDy78+ESZEOULAyqxQMD8KWyQc7P GPa89I4OQUQMgsYlOz1qx9IG97oY0KLDKlh4oGZ2AYHQxFImxLXKB4II3EQ/eXKk sXlKGoU0QJI= =uCtl - -----END PGP SIGNATURE----- - -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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