-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2022:5939-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:5939 Issue date: 2022-08-09 CVE Names: CVE-2022-21123 CVE-2022-21125 CVE-2022-21166 ==================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 7. 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 for Real Time (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - 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): * Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123) * Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125) * Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166) 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): * The kernel-rt crashes where one task is indefinitely looping in __start_cfs_bandwidth() with the cfs_b->lock spinlock being held (BZ#2079976) * update to the latest RHEL7.9.z16 source tree (BZ#2100182) 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/): 2090237 - CVE-2022-21123 hw: cpu: Incomplete cleanup of multi-core shared buffers (aka SBDR) 2090240 - CVE-2022-21125 hw: cpu: Incomplete cleanup of microarchitectural fill buffers (aka SBDS) 2090241 - CVE-2022-21166 hw: cpu: Incomplete cleanup in specific special register write operations (aka DRPW) 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-1160.76.1.rt56.1220.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.76.1.rt56.1220.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-1160.76.1.rt56.1220.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.76.1.rt56.1220.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.76.1.rt56.1220.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.76.1.rt56.1220.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-2022-21123 https://access.redhat.com/security/cve/CVE-2022-21125 https://access.redhat.com/security/cve/CVE-2022-21166 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 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYvKibdzjgjWX9erEAQiO5hAAlvruk8klN3RiFgOm+Sm8E35QbQ0os3F3 I9tHBnoj74P9MFzvswa59CfECajJrTPy+x9fs7f2+hsFe0UZ8XiB4N3fm09HP6mX qYhvf8wd4aSBk9TQU2UxmatRYCwPb4XB/7mSG6mH08BWHYGBzS5D/AnjC+6vYWco VvmWI9/a/BVy0fLp6DyNjnrM8rQ1lTNBCMICukMd+rtcYjx8VJzbHd0f40Eeax2Q gCIOYcAHFnCD7y2x81l1GIW5+c+eYCKmRG1XaL9P6So8DS1WYG7iNYiS360amesq 5fi+I6Y+f5S1ZSosI3xc9357bVOxRUSV6TvHuQmzwyMFQuUyvrrRO0w5beFJ8Uem 0JbExiKVj0t+lLK9oDrwbTDQCbfryhaxhLvpaeNLHsAv7UtLo6wDZI6diA9mSRh6 +vFjHMvyIMUpdb1pl6zIqMSPMaoDMb4fmwh+QqGk16OVxR3w1QehmBBISEdIMUkT 8nEaB8kYoSBl0sS4AhO7nRg6iefvJB1W4VKeKTAmv1Q2h0X57CXU9IropQMycQS9 q5IiPthc8VcRVLRSC+4sAq95YLw4AJvg7/zLfwq00TsAYrVHLp9KQX6eEOu7OCCU 9GZ6v+sqcj/EPuFaD/J6v7fhV7pLK2CToYiNdDhKrtGX5rk7iiQP+8j8ytMCPv3F MhBIr2D8tg0=kVm3 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce