-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2021:3444-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3444 Issue date: 2021-09-07 CVE Names: CVE-2021-3609 CVE-2021-3715 CVE-2021-37576 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 8.1 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 CodeReady Linux Builder EUS (v. 8.1) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609) * kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715) * kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576) 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): * Guest kernel call trace when boot up with 4T memory and 2 vcpus (BZ#1993551) 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/): 1971651 - CVE-2021-3609 kernel: race condition in net/can/bcm.c leads to local privilege escalation 1986506 - CVE-2021-37576 kernel: powerpc: KVM guest OS users can cause host OS memory corruption 1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.1): Source: kernel-4.18.0-147.54.2.el8_1.src.rpm aarch64: bpftool-4.18.0-147.54.2.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-core-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-devel-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-headers-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-modules-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-tools-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.54.2.el8_1.aarch64.rpm perf-4.18.0-147.54.2.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm python3-perf-4.18.0-147.54.2.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-147.54.2.el8_1.noarch.rpm kernel-doc-4.18.0-147.54.2.el8_1.noarch.rpm ppc64le: bpftool-4.18.0-147.54.2.el8_1.ppc64le.rpm bpftool-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-core-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-cross-headers-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-core-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-devel-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-modules-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-modules-extra-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-devel-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-headers-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-modules-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-modules-extra-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-tools-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-tools-libs-4.18.0-147.54.2.el8_1.ppc64le.rpm perf-4.18.0-147.54.2.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm python3-perf-4.18.0-147.54.2.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm s390x: bpftool-4.18.0-147.54.2.el8_1.s390x.rpm bpftool-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm kernel-4.18.0-147.54.2.el8_1.s390x.rpm kernel-core-4.18.0-147.54.2.el8_1.s390x.rpm kernel-cross-headers-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-core-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-devel-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-modules-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debug-modules-extra-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-147.54.2.el8_1.s390x.rpm kernel-devel-4.18.0-147.54.2.el8_1.s390x.rpm kernel-headers-4.18.0-147.54.2.el8_1.s390x.rpm kernel-modules-4.18.0-147.54.2.el8_1.s390x.rpm kernel-modules-extra-4.18.0-147.54.2.el8_1.s390x.rpm kernel-tools-4.18.0-147.54.2.el8_1.s390x.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-core-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-devel-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-modules-4.18.0-147.54.2.el8_1.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-147.54.2.el8_1.s390x.rpm perf-4.18.0-147.54.2.el8_1.s390x.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm python3-perf-4.18.0-147.54.2.el8_1.s390x.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.s390x.rpm x86_64: bpftool-4.18.0-147.54.2.el8_1.x86_64.rpm bpftool-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-core-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-cross-headers-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-core-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-devel-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-modules-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-modules-extra-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-devel-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-headers-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-modules-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-modules-extra-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-tools-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-tools-libs-4.18.0-147.54.2.el8_1.x86_64.rpm perf-4.18.0-147.54.2.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm python3-perf-4.18.0-147.54.2.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.1): aarch64: bpftool-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm kernel-tools-libs-devel-4.18.0-147.54.2.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm kernel-tools-libs-devel-4.18.0-147.54.2.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm kernel-tools-libs-devel-4.18.0-147.54.2.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.54.2.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.54.2.el8_1.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-2021-3609 https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/cve/CVE-2021-37576 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 iQIVAwUBYTeDnNzjgjWX9erEAQgVpBAAjGy4v5oHxHMfrafrvMGRQDKO6tZcP8LP xRJUFJoLzXCYLo7P4lEKE1FtGvCuuks5/3ET5j16ZeLNXsU10TXmn8MKCJwcAoe3 ENWsfx8cw6sA0zS5fSAmXbPsH53+FAhqx36QPaeAjRDIUsvwIWO7L2Qv5ECfS1gt VdsD8N+PYFEmUgzNv0aWdk7XL+6SCs3fktonYf/yq8sPA7t8JJN4WZhx4IkVUXqN +epy0m6y+N7xBFm9MNMQ9t/3PBwPGSrPH0jQUPIktgtrXLeGJWJasnhQwiS6OTvS 0D8VJlqA+r8OjM5XX8uJrxO1K0w1/N1Rn/riF/YYUJIVppI18iDqHzAGrGwQdzJg 5Iz4GTe/pLMwcFFtOFyinJcnsgEDbi8of3ksrDN3Ph3RfSozaxQuayxlglonMvav F1NHWAMR3ZWMueueU1WizORI6sCeBnDbEw84D4P1wCFrf1vR9mpBNHWPfLzVmO2Q 5nUCMXELwqtXLRHv6G1bSR8qNu/SB0SJK8mJUaPTsNw8S0hrpajCsewm4x24Vmha QUHszbStKxaSxA5my3cfT3WdzUO89GKuBALIctMWimPFc0GiqH9I1S7NR3pTqt9o 0GYmP7gfDX6XVl5yiUFbJW9pkXy1+7p1mpZVMIW4cFhFTRu5/8hBdI7COnVoGnCh tQOFXtxM9SA= =U7/D -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce