-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2021:3445-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3445 Issue date: 2021-09-07 CVE Names: CVE-2021-0512 CVE-2021-3715 ===================================================================== 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 Important. 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: out-of-bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers() of hid-input.c (CVE-2021-0512) * kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715) 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#1986064) * Failure to enter full_nohz due to needless SCHED softirqs (BZ#1990273) * kernel-rt: update RT source tree to the latest RHEL-8.2.z12 Batch source tree (BZ#1997761) 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/): 1974491 - CVE-2021-0512 kernel: out-of-bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers() of hid-input.c 1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c 6. Package List: Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2): Source: kernel-rt-4.18.0-193.65.2.rt13.117.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time EUS (v. 8.2): Source: kernel-rt-4.18.0-193.65.2.rt13.117.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.65.2.rt13.117.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.65.2.rt13.117.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-2021-0512 https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/updates/classification/#important 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 iQIVAwUBYTeB9tzjgjWX9erEAQjJHg/+MJV9+h4M9OzTSDywcWY4OOGdmWEl9cYv 4Cr2LlTJC27t/oZ+tmG/xmYsranSvBkfwod16nUqdKttA13UiJLvFuoD0U85SNUx AXsUuUJFt6QJZh3HMXZeiRmhtxpUWakxGjHyIoEjQC5+MIVspBRxYpembczwkT8l t3FQCJrKR3jbT9yK4uSaGMfDDSP28cFzNuTmvJRvZVhE9sHY78nQ+b1RPT+kHahk eh7Zp+qyhV/O4zBN2ShFrsyCT96wkEcT6nPgFfzBpL/I3t2nhn8MyBAIbyrZrawg mjdEew34yzn1EFpFuecegVGaIn6AsLEEdJSJ3TRrhltf8RIgpsXOj4QQW9hNH57+ S10tj97Tyyvk18wvVwuQ3jQVY9BrRd/zaJ05GtkJ1PBvFICg1L9wkTve32EHD+5H 0v3Evz8e+knrxoSS1m1AWhZdRZWYNUOMx6ykm8+M6ebl7379MU+yRZi0kqs/gV45 JhEnUmpxeoZcj3PbaX0tNMcVWbnEk7mC9dFhuJBvgqkFJw1m5+Y9pyJz3lEimIyv 1grt7NIQb/4ojRBYpivKxFUVEXXbGfZoBXX2O5bbURexdA5t32f7YAypPkP0L6PT MNtgjNTkOnw2+N3fByswS+BeOCAnGPZ1zbs1pHdDMNAVnIZQ4pnQwe90qC3et8QU 97EM466OoLs= =/mEE -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce