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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1340 kernel-rt security and bug fix update 21 April 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-27365 CVE-2021-27364 CVE-2021-27363 CVE-2021-3347 Reference: ESB-2021.1307 ESB-2021.1225 ESB-2021.1224 ESB-2021.1223 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:1279 - --------------------------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-2021:1279-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1279 Issue date: 2021-04-20 CVE Names: CVE-2021-3347 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 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 Real Time EUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) - 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 via PI futex state (CVE-2021-3347) * kernel: out-of-bounds read in libiscsi module (CVE-2021-27364) * kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365) * kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363) 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): * kernel-rt: update RT source tree to the latest RHEL-8.2.z8 Batch source tree (BZ#1916765) 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/): 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state 1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem 1930079 - CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles 1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module 6. Package List: Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2): Source: kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time EUS (v. 8.2): Source: kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.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-2021-3347 https://access.redhat.com/security/cve/CVE-2021-27363 https://access.redhat.com/security/cve/CVE-2021-27364 https://access.redhat.com/security/cve/CVE-2021-27365 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 2021 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYH7RjtzjgjWX9erEAQhcjw/+M//2omsi7diVNVZd9utF2yFLggytxtLF rPuo0IhH2hGYv1a1LOc4kUVrvXUq+tzH+NXKPfSTOyMqKYQnB+t0M8Mx4ngSSFyI igNzcKdf/WkVyLJOrmaoNjubj9JinryCe2adEXj3iHXKDestKGUaOZtQFIqlggHw lRvKl36dxXWh2684xIhkQf+24f3NA3ysoZpm6XXUKfDO7OBZVlS52A+OFgrt0cYb /+eyNGjKth7VC3z1AcUYqtN+uMNooEOvQgdduoHrXLXAU1LZ18F007tSd2ur4dMM Gr6222PEYjtOBaNvrvEmjego3HxCCxMiXNe2ZqQ9CIG+VZWWMhw09h8QyyrP4D+a QFooPYj6ioUb1wlDT3ghv1uKRyRTkfhu/B+11Ij2i6NzAeuAedCjQDsJxm2mcaAC mDFlirJ0eeCzW2lM5sYHLm63/KKNS968FtntjGdos38h3rCVNIEaMcxDWMU5fhjd AqrDUYc46i473AxlQoeByVfIvQfLDA7sO8lyVL3Qsh0ZIp5Udva0hMoNeoGH3kgh iMNt8X4DzftymmF7CXuWZIp+xP8/IJw6oNfy9sVNAgw9Rsj2UdzxruJr/r+DQdCC VZQEScUhr+3/kBwN1ux0FPiXMrPrUB9ZDr0GzBqItHfBAt67TYym8muXvtLF3bWZ ikUxYtPiXwM= =iDNF - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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