-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2022:6437-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:6437 Issue date: 2022-09-13 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 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): * 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 latest RHEL 8.6.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2111112) 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 Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.src.rpm x86_64: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-kvm-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-kvm-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm Red Hat Enterprise Linux Real Time (v. 8): Source: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.src.rpm x86_64: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.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 iQIVAwUBYyCCBtzjgjWX9erEAQiMVxAAj4C0/6TQ/Wts6/PsnA7c4EJbxOzcjnSf bdJSktu0TYTmpmiZI1tZ22LbABATshxGKqzz15bFGQlIE+wHSDxN8NF86XPmdNCF Yqi8g2YZDLeKd02ggzE8ZOcjuSdkAT09qaTP9AusbQububoCFv/dR4v0UZ3+Mpk2 Bhe1VumtyZVHt4ps06dRVthVCt4HJdPEEOFmoCE4kg+ij6x626dvRuLWFbUclhHe qg+5JOBLJx9UCMHMS5X7qrdySfLw6xrqX0QM18ElmCTtnfJ03FQjzw6j6F0gV17a xGqDhJJbYby4Uhqe0eNPG5P01UW+8aWyXIxtpuG/uCJ0oC65j4yXpG136fuztx1a R+7c2xYeuZ1qrNvYsJDecYtgDwlSuhWJ/S+snlYAgB4HJ6ouHPx2Y0SYu2Xznm/2 fNj5oV13UioCVvTptBU6dI6ByX8qalq0fIbt+lb5M23vu+zlpMs6b80u3pekC7uR 3PM9Udb59P9wIcwDlS1v9jSyO/4B3maCh6vtjpdGDBUIbbOSE5E9S7zTR4vHFzhI ji5EcEHGpBz615xVGi/fSzudyR/2yjzqjazhkX5dYEZ5kOBtOOeAxTIgAQ3yhjt2 +ZFPoA9cSGTxR3AhZU+lnggpod97b8rD3IqCuz2PetsRoikUTQSIRiKBlp058FAt /NJdeWcHmjI=t/FA -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce