-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2020:3297-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:3297 Issue date: 2020-08-04 CVE Names: CVE-2020-10766 CVE-2020-10767 CVE-2020-10768 ==================================================================== 1. Summary: An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.1 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 BaseOS EUS (v. 8.1) - x86_64 3. Description: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es): * kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (CVE-2020-10766) * kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available. (CVE-2020-10767) * kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768) 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. 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 5. Bugs fixed (https://bugzilla.redhat.com/): 1845840 - CVE-2020-10766 kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection. 1845867 - CVE-2020-10767 kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available. 1845868 - CVE-2020-10768 kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.1): Source: kpatch-patch-4_18_0-147-1-16.el8.src.rpm kpatch-patch-4_18_0-147_0_2-1-12.el8.src.rpm kpatch-patch-4_18_0-147_0_3-1-12.el8.src.rpm kpatch-patch-4_18_0-147_13_2-1-3.el8_1.src.rpm kpatch-patch-4_18_0-147_20_1-1-2.el8_1.src.rpm kpatch-patch-4_18_0-147_3_1-1-12.el8_1.src.rpm kpatch-patch-4_18_0-147_5_1-1-7.el8_1.src.rpm kpatch-patch-4_18_0-147_8_1-1-5.el8_1.src.rpm x86_64: kpatch-patch-4_18_0-147-1-16.el8.x86_64.rpm kpatch-patch-4_18_0-147-debuginfo-1-16.el8.x86_64.rpm kpatch-patch-4_18_0-147-debugsource-1-16.el8.x86_64.rpm kpatch-patch-4_18_0-147_0_2-1-12.el8.x86_64.rpm kpatch-patch-4_18_0-147_0_2-debuginfo-1-12.el8.x86_64.rpm kpatch-patch-4_18_0-147_0_2-debugsource-1-12.el8.x86_64.rpm kpatch-patch-4_18_0-147_0_3-1-12.el8.x86_64.rpm kpatch-patch-4_18_0-147_13_2-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_13_2-debuginfo-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_13_2-debugsource-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_20_1-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_20_1-debuginfo-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_20_1-debugsource-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_3_1-1-12.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_5_1-1-7.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_8_1-1-5.el8_1.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-2020-10766 https://access.redhat.com/security/cve/CVE-2020-10767 https://access.redhat.com/security/cve/CVE-2020-10768 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 2020 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXykRHtzjgjWX9erEAQiVaBAAnag+v/MOQvTK1PFcOUk6Dw2+aPuq2JTT TyrLP/D0a0D9DlOh/YBHtLXf6J309gRBGKnVuFWIDJDRr+wlqDkE91VvRm0xu85Q TJh1lf2I/DVxIZZTS4hARbB6hVvN8i+k/NhfeGTphVnEQ70c0z8SMR4aNUu2nbgk bIu/Vn0DjqfUQ3K5kKdYWmrD6osG1heTfZpo+nXGy2Y/cxk/LJxymXiF+/FDVpPr 3G9krOSyiwN9cS7RHSdqV/BfKlZypqBHmo21m3jufgRoyjf7anI13wdGfARP3pq1 mD68P1UztY/eQjZMS8RhjicF3vRXlQ8NZXKs+rbj9NEGRQbj74F1vcyoQwWgq9NX xbpd6zWBgZ3HsXnyola/Of9LJhxHzGI7s7WQcVCaVWjHMUC/xsfxVrutqXn3xAmN HFoRNnZrrjn/iA2/KrA+rNkBvyA+fi2FvZLk0m75MwrpjD7IF+auj1hhB5mnwh5B Pmbe+0gZUNAHkW4bYXR/CXA6S+aoCfLIuYdq11fJzTmtcaZIseIo24iVaA/bVRaD 1bd+oa7LaLabz0PJrGMjWLF/RRxdagtIwObc9rw2lvt81isxB8q+mi/o78fJyn3m DPslv2uqLNYPEUBs7TbxPSIVsBEVVaoI+Ohw/DXSZflTGVOuqRFMcgNP7m+wwF95 rQOVAWajASI=s8A3 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce