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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0839 kernel security, bug fix, and enhancement update 10 March 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-29661 CVE-2020-25705 CVE-2020-25211 CVE-2020-14351 CVE-2020-0444 Reference: ESB-2021.0768 ESB-2021.0589 ESB-2021.0556 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:0765 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2021:0765-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0765 Issue date: 2021-03-09 CVE Names: CVE-2020-0444 CVE-2020-14351 CVE-2020-25211 CVE-2020-25705 CVE-2020-29661 ===================================================================== 1. Summary: An update for kernel 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 CodeReady Linux Builder EUS (v. 8.2) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - 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: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444) * kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) * kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) * kernel: performance counters race condition use-after-free (CVE-2020-14351) * kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) 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): * RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882241) * [mlx5] VF interface stats are not reflected in "ip -s link show" / "ifconfig <vf>" commands (BZ#1889301) * [mlx5] IPV6 TOS rewrite flows are not getting offloaded in HW (BZ#1897689) * RHEL 8.1 - Call traces show I/O stuck for more than 120 sec when at least one path is available for NVMe/IB (BZ#1901525) * RHEL8: kernel-rt: kernel BUG at kernel/sched/deadline.c:1462! (BZ#1908732) * [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to vmbus_wait_for_unload (BZ#1913529) * Host becomes unresponsive during stress-ng --cyclic test rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (BZ#1913965) * race condition when creating child sockets from syncookies (BZ#1915530) * Missing mm backport to fix regression introduced by another mm backport (BZ#1915815) * On System Z, a hash needs state randomized for entropy extraction (BZ#1915817) * [Hyper-V][RHEL-8]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1917712) * kvm-rhel8.3 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1919886) * [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap (BZ#1929909) * rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929911) Enhancement(s): * [Mellanox 8.4 FEAT] mlx5: Add messages when VF-LAG fails to start (BZ#1892345) * Add kernel option to change cpumask for kernel threads (BZ#1915344) 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/): 1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free 1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c 1894579 - CVE-2020-25705 kernel: ICMP rate limiting can be used for DNS poisoning attack 1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free 1920474 - CVE-2020-0444 kernel: bad kfree in auditfilter.c may lead to escalation of privilege 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.2): Source: kernel-4.18.0-193.46.1.el8_2.src.rpm aarch64: bpftool-4.18.0-193.46.1.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-core-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-devel-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-headers-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-modules-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-tools-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.46.1.el8_2.aarch64.rpm perf-4.18.0-193.46.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm python3-perf-4.18.0-193.46.1.el8_2.aarch64.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-193.46.1.el8_2.noarch.rpm kernel-doc-4.18.0-193.46.1.el8_2.noarch.rpm ppc64le: bpftool-4.18.0-193.46.1.el8_2.ppc64le.rpm bpftool-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-core-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-cross-headers-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-core-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-modules-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-headers-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-modules-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-modules-extra-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-tools-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-tools-libs-4.18.0-193.46.1.el8_2.ppc64le.rpm perf-4.18.0-193.46.1.el8_2.ppc64le.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm python3-perf-4.18.0-193.46.1.el8_2.ppc64le.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm s390x: bpftool-4.18.0-193.46.1.el8_2.s390x.rpm bpftool-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm kernel-4.18.0-193.46.1.el8_2.s390x.rpm kernel-core-4.18.0-193.46.1.el8_2.s390x.rpm kernel-cross-headers-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-core-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-devel-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-modules-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-193.46.1.el8_2.s390x.rpm kernel-devel-4.18.0-193.46.1.el8_2.s390x.rpm kernel-headers-4.18.0-193.46.1.el8_2.s390x.rpm kernel-modules-4.18.0-193.46.1.el8_2.s390x.rpm kernel-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm kernel-tools-4.18.0-193.46.1.el8_2.s390x.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-core-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-devel-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-modules-4.18.0-193.46.1.el8_2.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm perf-4.18.0-193.46.1.el8_2.s390x.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm python3-perf-4.18.0-193.46.1.el8_2.s390x.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm x86_64: bpftool-4.18.0-193.46.1.el8_2.x86_64.rpm bpftool-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-core-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-cross-headers-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-core-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-devel-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-modules-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-devel-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-headers-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-modules-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-modules-extra-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-tools-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-tools-libs-4.18.0-193.46.1.el8_2.x86_64.rpm perf-4.18.0-193.46.1.el8_2.x86_64.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm python3-perf-4.18.0-193.46.1.el8_2.x86_64.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.2): aarch64: bpftool-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm python3-perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.x86_64.rpm perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm python3-perf-debuginfo-4.18.0-193.46.1.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-2020-0444 https://access.redhat.com/security/cve/CVE-2020-14351 https://access.redhat.com/security/cve/CVE-2020-25211 https://access.redhat.com/security/cve/CVE-2020-25705 https://access.redhat.com/security/cve/CVE-2020-29661 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYEdYp9zjgjWX9erEAQjxNQ//VH+OBDzUqH/7k0w4S/hHrpfvQoTTpbss uGdH4nDP1s2gP03MLTIFc3VaZY+dsbIYp+CsHMZ9y49kEKqPXp21F53mjM/sfzb4 K4lfhPL3W7cqTc0Fk2OXgn5eydzNrBjc46fvgPRvw5EvEVyMUm+qVCJXGe3uhaln wv0dxVkyPDcTgMrOxKeU6ViANH610epeAJ/0apSPdxkPGVdOeQYDhR5lYTEmmm6H TiN8bEeFHkCQprwaF5c1t2J8VUZi+rD7d8c/qYgJUuwA3R4OI4wHjc+2W5cWsNFM IDOuSVH9h5dsxAzkoAqnhKqX3u6IENMSPqwIEboHdlZBN5N+Z/K0p+JTk8H8GSsD dswJjkWnCRaiIAK6lRgo74Wrk0tcmLhAjXb3FSWcyi/AwGEXcQPMaWBSgCsyncRu yJ6hLUJCm3zxP4BhxwV6eUw8RcLL2RrP9LTnLpkVSEfspUOTiGo03lroREs7dJB0 Jlmhk6v+lmH5LmzBoQd6jdruQo+1WoqJavJqSwSoHKMgpVhJfSMkRQ1+32FtlrFI Z6XNmBa+O+vKwCC1NwkMrUU6pVHRJF42b2UlikRcFlvFZz5oWysqUxhGAAgCBQOZ uHxLG7VSWGkZRKkVbx6tDzGxZ6xCD1hBkHEcmoCyEtnDIGcwlAxsWdMTEIKkbPDF jEgSjHkalIU= =+O76 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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