-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2021:1093-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1093 Issue date: 2021-04-06 CVE Names: CVE-2020-0466 CVE-2020-27152 CVE-2020-28374 CVE-2021-3347 CVE-2021-26708 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 8. 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 (v. 8) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS (v. 8) - 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: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466) * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) * kernel: Use after free via PI futex state (CVE-2021-3347) * kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708) * kernel: out-of-bounds read in libiscsi module (CVE-2021-27364) * kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365) * Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152) * kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363) 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): * race condition when creating child sockets from syncookies (BZ#1915529) * On System Z, a hash needs state randomized for entropy extraction (BZ#1915816) * scsi: target: core_tmr_abort_task() reporting multiple aborts for the same se_cmd->tag (BZ#1918354) * [mlx5] VF interface stats are not reflected in "ip -s link show" / "ifconfig " commands (BZ#1921060) * Win10 guest automatic reboot after migration in Win10 and WSL2 on Intel hosts (BZ#1923281) * [RHEL 8.3] Repeated messages - Unable to burst-read optrom segment (BZ#1924222) * Backport bug fix RDMA/umem: Prevent small pages from being returned by ib_umem_find_best_pgsz (BZ#1924691) * [Cisco 8.3] RHEL/Cent 8.2 fNIC driver needs a patch fix that addresses crash (BZ#1925186) * RHEL8.3 - The kernel misdetects zCX with z/VM (BZ#1925508) * Backport 22e4663e91 ("mm/slub: fix panic in slab_alloc_node()") (BZ#1925511) * SCTP "Address already in use" when no active endpoints from RHEL 8.2 onwards (BZ#1927521) * lpfc: Fix initial FLOGI failure due to BBSCN not supported (BZ#1927921) * [mm] mm, oom: remove oom_lock from oom_reaper (BZ#1929738) * Unexpected thread movement with AMD Milan compared to Rome (BZ#1929740) * rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929910) * [Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to add memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930168) * Configuring the system with non-RT kernel will hang the system (BZ#1930735) * Upstream Patch for Gracefully handle DMAR units with no supported address widthsx86/vt-d (BZ#1932199) * gfs2: Deadlock between gfs2_{create_inode,inode_lookup} and delete_work_func (BZ#1937109) * Failing on tsx-ctrl when the flag doesn't change anything (BZ#1939013) Enhancement(s): * RFE: Backport all Audit enhancements and fixes up to version 5.10-rc1 (BZ#1907520) * RHEL8.4: Update the target driver (BZ#1918363) * [Mellanox 8.4 FEAT] mlx5: Hairpin Support in Switch Mode (BZ#1924689) 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/): 1888886 - CVE-2020-27152 Kernel: KVM: host stack overflow due to lazy update IOAPIC 1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore 1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state 1925588 - CVE-2021-26708 kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c 1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem 1930079 - CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles 1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kernel-4.18.0-240.22.1.el8_3.src.rpm aarch64: bpftool-4.18.0-240.22.1.el8_3.aarch64.rpm bpftool-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-core-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-cross-headers-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-core-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-devel-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-modules-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-modules-extra-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-devel-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-headers-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-modules-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-modules-extra-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-tools-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-tools-libs-4.18.0-240.22.1.el8_3.aarch64.rpm perf-4.18.0-240.22.1.el8_3.aarch64.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm python3-perf-4.18.0-240.22.1.el8_3.aarch64.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-240.22.1.el8_3.noarch.rpm kernel-doc-4.18.0-240.22.1.el8_3.noarch.rpm ppc64le: bpftool-4.18.0-240.22.1.el8_3.ppc64le.rpm bpftool-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-core-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-cross-headers-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-core-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-devel-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-modules-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-modules-extra-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-devel-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-headers-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-modules-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-modules-extra-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-tools-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-tools-libs-4.18.0-240.22.1.el8_3.ppc64le.rpm perf-4.18.0-240.22.1.el8_3.ppc64le.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm python3-perf-4.18.0-240.22.1.el8_3.ppc64le.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm s390x: bpftool-4.18.0-240.22.1.el8_3.s390x.rpm bpftool-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm kernel-4.18.0-240.22.1.el8_3.s390x.rpm kernel-core-4.18.0-240.22.1.el8_3.s390x.rpm kernel-cross-headers-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-core-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-devel-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-modules-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debug-modules-extra-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-240.22.1.el8_3.s390x.rpm kernel-devel-4.18.0-240.22.1.el8_3.s390x.rpm kernel-headers-4.18.0-240.22.1.el8_3.s390x.rpm kernel-modules-4.18.0-240.22.1.el8_3.s390x.rpm kernel-modules-extra-4.18.0-240.22.1.el8_3.s390x.rpm kernel-tools-4.18.0-240.22.1.el8_3.s390x.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-core-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-devel-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-modules-4.18.0-240.22.1.el8_3.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-240.22.1.el8_3.s390x.rpm perf-4.18.0-240.22.1.el8_3.s390x.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm python3-perf-4.18.0-240.22.1.el8_3.s390x.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.s390x.rpm x86_64: bpftool-4.18.0-240.22.1.el8_3.x86_64.rpm bpftool-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-core-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-cross-headers-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-core-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-devel-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-modules-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-modules-extra-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-devel-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-headers-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-modules-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-modules-extra-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-tools-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-tools-libs-4.18.0-240.22.1.el8_3.x86_64.rpm perf-4.18.0-240.22.1.el8_3.x86_64.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm python3-perf-4.18.0-240.22.1.el8_3.x86_64.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm Red Hat CodeReady Linux Builder (v. 8): aarch64: bpftool-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm kernel-tools-libs-devel-4.18.0-240.22.1.el8_3.aarch64.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm kernel-tools-libs-devel-4.18.0-240.22.1.el8_3.ppc64le.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debug-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-tools-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm kernel-tools-libs-devel-4.18.0-240.22.1.el8_3.x86_64.rpm perf-debuginfo-4.18.0-240.22.1.el8_3.x86_64.rpm python3-perf-debuginfo-4.18.0-240.22.1.el8_3.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-2020-0466 https://access.redhat.com/security/cve/CVE-2020-27152 https://access.redhat.com/security/cve/CVE-2020-28374 https://access.redhat.com/security/cve/CVE-2021-3347 https://access.redhat.com/security/cve/CVE-2021-26708 https://access.redhat.com/security/cve/CVE-2021-27363 https://access.redhat.com/security/cve/CVE-2021-27364 https://access.redhat.com/security/cve/CVE-2021-27365 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 iQIVAwUBYGxuX9zjgjWX9erEAQjjwA//eytWPJuijFL/ECxnISUNZ9i41Ff8r/zg SWX8qN9lO2NJZCfHffhQlUeP+tGVKjYQ4XLeUZ0qCpC1tElApZsjzQY85HufOksI xo99uDI4kC2bn16kcRbKUBahfSsEMF4tjXKkfU08R4hXOmuBYIVfcs/QjhVWpy3I NALgTd56ZzHFYB24oVraZ9l35GAWmM7fdMvXJGGus1QFNjjoKCiyL3gHP/82g6wn vMTtQDiO3fTIAUM1KV0oi3eUPComfpAyAjTwNf3q5Xp30efAvXVLAg6QpN4lpjZ8 z4BpngPb6LovLdc9k9XE86ubLQfpK3J9wTVXaVdWRD8L+k89pJtFTor/E5qRBvEC lvq1BrELiWruuVLIOP27TDKzy7dGd20Qn5f3YyQaCBuwsw+XgnKijtbc8vaN6VT8 q78QZh1Exp5V5DNQaLkjYSWDkoX8BogbJ7+t7aSsOPgWd05zsN6bhxAR37vIzH9m nolQ092zF3U5l86Rpwfb8ZEoPF2n6wu0ORXyJNeXN2WJaf3cPGpQMu0KR/cLBGEf 0J3tDRKuh3++AZmQHYXSM4Q6SlsOYpRb4eGeHSuGcIjQbiIyhJMr8JCdJ307dGK1 2G/bRrJ8gPqTBSeICMuUkSMkRPzEhnZKUQzNMfMmYxFAjBUaQBSnD2D/3ZdnjIXJ P3ZmzmeD/BA=eIA0 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce