-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2021:3909-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3909 Issue date: 2021-10-19 CVE Names: CVE-2021-3653 CVE-2021-3656 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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 EUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) - 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): * kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653) * kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656) 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): * kernel-rt: update RT source tree to the RHEL-8.2.z source tree (BZ#2009052) 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/): 1983686 - CVE-2021-3653 kernel: SVM nested virtualization issue in KVM (AVIC support) 1983988 - CVE-2021-3656 kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) 6. Package List: Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2): Source: kernel-rt-4.18.0-193.68.1.rt13.118.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time EUS (v. 8.2): Source: kernel-rt-4.18.0-193.68.1.rt13.118.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.68.1.rt13.118.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.68.1.rt13.118.el8_2.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-2021-3653 https://access.redhat.com/security/cve/CVE-2021-3656 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYW5rE9zjgjWX9erEAQiSAw//f9OmMP160EH0+TF+ZEImc3hf+XbkiCEM Yo9wDesk0i67fMtQuqJWqz1LPykIIF+vOoxUa74zWYC/qfIvbRY4xTa5tAFjgMBQ fSgLJA3NIPMlgZd1qp97lHZF3MnITfRN+tY8iZSnwArmsdfpI96d1q1SBCzf+F4S H5uYwUhex+hIm8Y+tCcZ0HjmCFLI15KT7Fwg4k4KDHT99TaLPQCjwDPuSyKKLBRX ODxMgJr6t4Bt2HE1UORmvnW5Rg4Xq9NDF46LhldDCGhLi/4P5EbgSpBmGvkn5ix6 MbTGW8/vCez6VcGvQ6vKAPdUDdSPJa/Ne+xL955gEOL9gIdT55DQyHslL98/0brX s2NGs0JaoLlmMeXY8hPUUJNg/3G+woFWYEzxYhym4dNF2Ao5P+eDZQaxXAGPhJsW 1qVdUBBykPc3hIdWpX5rPom1tLqSBNYyaN73Xmw/cWUdlGXipaKpGfZMoUpE+7rb 4iOzBjfmrMKKyQMsju0Iy4WiuzPf/UlK1Imz2Xl5PUuHCyJthN6qQLQnv3nm4DVX OO8aAyqlhGQTOeF8XFMyeNejvFPs+xHe+oXVQYxL93xO+o5rCTVz1ob0eFHeopPf SkkPV9LrWnsf2Zf4AQXXLFC2qwuEkQeNMIysZGNSq2mLebLB+RhQqz+dDsjwQK4e ZUBcq5QWZqg= =6zT2 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce