-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2021:1376-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1376 Issue date: 2021-04-27 CVE Names: CVE-2020-15436 CVE-2020-28374 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.6 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 ComputeNode EUS (v. 7.6) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) * kernel: out-of-bounds read in libiscsi module (CVE-2021-27364) * kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365) * kernel: use-after-free in fs/block_dev.c (CVE-2020-15436) * 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): * [infiniband] Backport Request to fix Multicast Sendonly joins (BZ#1937820) 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/): 1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore 1901168 - CVE-2020-15436 kernel: use-after-free in fs/block_dev.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 ComputeNode EUS (v. 7.6): Source: kernel-3.10.0-957.72.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.72.1.el7.noarch.rpm kernel-doc-3.10.0-957.72.1.el7.noarch.rpm x86_64: bpftool-3.10.0-957.72.1.el7.x86_64.rpm kernel-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.72.1.el7.x86_64.rpm kernel-devel-3.10.0-957.72.1.el7.x86_64.rpm kernel-headers-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.72.1.el7.x86_64.rpm perf-3.10.0-957.72.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm python-perf-3.10.0-957.72.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6): x86_64: kernel-debug-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.72.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.6): Source: kernel-3.10.0-957.72.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.72.1.el7.noarch.rpm kernel-doc-3.10.0-957.72.1.el7.noarch.rpm ppc64: kernel-3.10.0-957.72.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-957.72.1.el7.ppc64.rpm kernel-debug-3.10.0-957.72.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-957.72.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.72.1.el7.ppc64.rpm kernel-devel-3.10.0-957.72.1.el7.ppc64.rpm kernel-headers-3.10.0-957.72.1.el7.ppc64.rpm kernel-tools-3.10.0-957.72.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-957.72.1.el7.ppc64.rpm perf-3.10.0-957.72.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm python-perf-3.10.0-957.72.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-957.72.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debug-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.72.1.el7.ppc64le.rpm kernel-devel-3.10.0-957.72.1.el7.ppc64le.rpm kernel-headers-3.10.0-957.72.1.el7.ppc64le.rpm kernel-tools-3.10.0-957.72.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-957.72.1.el7.ppc64le.rpm perf-3.10.0-957.72.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm python-perf-3.10.0-957.72.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm s390x: kernel-3.10.0-957.72.1.el7.s390x.rpm kernel-debug-3.10.0-957.72.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-957.72.1.el7.s390x.rpm kernel-debug-devel-3.10.0-957.72.1.el7.s390x.rpm kernel-debuginfo-3.10.0-957.72.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-957.72.1.el7.s390x.rpm kernel-devel-3.10.0-957.72.1.el7.s390x.rpm kernel-headers-3.10.0-957.72.1.el7.s390x.rpm kernel-kdump-3.10.0-957.72.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-957.72.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-957.72.1.el7.s390x.rpm perf-3.10.0-957.72.1.el7.s390x.rpm perf-debuginfo-3.10.0-957.72.1.el7.s390x.rpm python-perf-3.10.0-957.72.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.s390x.rpm x86_64: bpftool-3.10.0-957.72.1.el7.x86_64.rpm kernel-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.72.1.el7.x86_64.rpm kernel-devel-3.10.0-957.72.1.el7.x86_64.rpm kernel-headers-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.72.1.el7.x86_64.rpm perf-3.10.0-957.72.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm python-perf-3.10.0-957.72.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.6): ppc64: kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.72.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-957.72.1.el7.ppc64.rpm perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.72.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-957.72.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.72.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.72.1.el7.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-2020-15436 https://access.redhat.com/security/cve/CVE-2020-28374 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 iQIVAwUBYIfMpNzjgjWX9erEAQj7LQ/9ECPSAh1Xpx1WpLkhQ7VPoCaC69GIrbYD lziapGIDQBVwlfEFHnWByXfmb49FswgnXvdZcCBk+dRtln7R5a1CM1gUFoZ0qpDk 5UNcnbYd8Kg3J5doYqYeckqm2EZi+uh42zsxFNh4oPw9/1xQ/QZ8DEeOGr229xOZ crsBQv05xGgPwrk4eNPJmAbiyVD75qCJzy0H6p/ikUpM13OEKLfHI/g7blA1bXLd VSSPyJiE3XMEthhW1ro2ND9BYAgAjcjzHOK/9kenAJ+HqiUbjvWFaLQcSiYTKYWb JfDWgllvWKsFB1eOZTdHubyFdB6EPyLWy1WK6u6T94o5rRiyjuCvUhaNPLlV3Qua POfArpNakkJx7sZgbzBC1Bhx+ibnz+5H+JsmywktMxK6Y+trPGq2+Z86+3EYZh6j i+QYV4yeansM1pBGJpV1ZxfnI9UZbuqnQGBtu699eIO5mVnyEk2J068KC5TyoS+2 T83gspyr0vC6NHivRpA5nnfSErIp748DPiLxuTCCd8iyCRmlEUFWxlGiO86euCV2 CC2xeb6dbHpeFGJBw4ZpChmUKR4mi0kgIteMH0T3x3TBLL7gf1WX6rx/LfgJeZ/f uHX4Z3C98S9n5zhFHZRDjzlawBIffiNuAVTj4fUOsoTdTsUYVe/7cDcCQBACHKPY 0uU3hW8cSYY= =hKEW -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce