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(RHSA-2022:6991) Important: 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): * A use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588) * Information leak in the IPv6 implementation (CVE-2021-45485) * Information leak in the IPv4 implementation (CVE-2021-45486) * 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): * update RT source tree to the RHEL-8.4.z12 source tree (BZ#2119160) * using __this_cpu_add() in preemptible [00000000] - caller is __mod_memcg_lruvec_state+0x69/0x1c0 [None8.4.0.z] (BZ#2124454)


Affected Package


OS OS Version Package Name Package Version
RedHat 8 kernel-rt-debug-debuginfo 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug-core 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug-kvm 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-kvm 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-modules 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-modules-extra 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug-devel 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debuginfo-common-x86_64 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-core 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug-modules 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debug-modules-extra 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-devel 4.18.0-305.65.1.rt7.137.el8_4
RedHat 8 kernel-rt-debuginfo 4.18.0-305.65.1.rt7.137.el8_4

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