-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2020:3219-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:3219 Issue date: 2020-07-29 CVE Names: CVE-2019-20908 CVE-2020-15780 ==================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8. 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 Real Time (v. 8) - x86_64 Red Hat Enterprise Linux Real Time for NFV (v. 8) - 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: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908) * kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780) 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: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837441) * kernel-rt: update RT source tree to the RHEL-8.2.z3 source tree (BZ#1856816) 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/): 1852942 - CVE-2019-20908 kernel: lockdown: bypass through ACPI write via efivar_ssdt 1852962 - CVE-2020-15780 kernel: lockdown: bypass through ACPI write via acpi_configfs 6. Package List: Red Hat Enterprise Linux Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-193.14.3.rt13.67.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time (v. 8): Source: kernel-rt-4.18.0-193.14.3.rt13.67.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.14.3.rt13.67.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-2019-20908 https://access.redhat.com/security/cve/CVE-2020-15780 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/vulnerabilities/grub2bootloader 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXyHAs9zjgjWX9erEAQhT6w/+Jy9376Tp0DsXyXTqHmJTp3KPjwZg7ub3 9xbfBZKbNPAFIFpIhSNLqnAyotZW7o4QRU/8ponoUPSmkG/HmiKwtGD4x6oc0YiM ouTkJPwxtyDjEl5x4RLueyxmmpzHkC5YYy/5nS0j1MKBKveqMxAMSdrD0X2HBq0T nXKgO+bQf2bpeA9HnU2BIOTBOLEhVSYyODSk9+mcMJ88HYyjE3YCnhS0M7+EaBwx tAEqzAbt0X47MjQKJMoIOEI/QASj+JqF9hkfJola8C4govJOew/n/JLoxaJtrJz2 KyqRnoPKxi5LneRKjdWUGrvG62jCJzI/1kEeyufkEmnAFwiIr+/vcRSGg2iGpTOv YUacEaOo8YE5JhTkaJm0tcTFD5o3GUI2QVG7FR8L6DRwy4CJeKLuis/7Wf399Ysj X0Efa/POfewlwjwPHin4nYPSSv72717618enBVgnVacr1qhh6xTOuY6MwtQQdeoF Tpx+NryCyTDKamExj7mW18nHD0OUmzOe3YAvAJNQxOra0qJcJkqJ4Cxgg7NrqxPf SWeCIA9zeGZWWN5rjgf7DsoL8po3sWYJ2rwYX2aTWdGycNu+d1AxUuX+myOgOqcU b20fn0Q03NRMuW0myQGmmslgh4v5Gj/gNbbKrjW043dKpP9oxhLBCO0T8oWeSWGM FCkONUlc7Qc=/WlA -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce