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(RHSA-2021:3440) Moderate: kernel-rt security and bug fix update

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: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201) 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): * OSLAT spikes on subset of cpus (BZ#1986063) * kernel-rt: update RT source tree to the RHEL-8.4.z source tree (BZ#1990013) * Failure to enter full_nohz due to needless SCHED softirqs (BZ#1990272) * kernel-rt: Make rcu_normal_after_boot writable (BZ#1995431)


Affected Package


OS OS Version Package Name Package Version
RedHat 8 kernel-rt 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-modules-extra 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-devel 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-modules 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-core 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-modules 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debuginfo-common-x86_64 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-modules-extra 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debuginfo 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-kvm 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-kvm 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-debuginfo 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-devel 4.18.0-305.17.1.rt7.89.el8_4
RedHat 8 kernel-rt-debug-core 4.18.0-305.17.1.rt7.89.el8_4

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