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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2322 kernel security and bug fix update 8 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-33034 CVE-2020-26541 Reference: ESB-2021.2262 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:2666 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2021:2666-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2666 Issue date: 2021-07-07 CVE Names: CVE-2020-26541 CVE-2021-33034 ===================================================================== 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: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034) * kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541) 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): * [Azure][RHEL8.4] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1963052) 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/): 1886285 - CVE-2020-26541 kernel: security bypass in certs/blacklist.c and certs/system_keyring.c 1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.1): Source: kernel-4.18.0-147.51.1.el8_1.src.rpm aarch64: bpftool-4.18.0-147.51.1.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-core-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-devel-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-headers-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-modules-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-tools-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.51.1.el8_1.aarch64.rpm perf-4.18.0-147.51.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm python3-perf-4.18.0-147.51.1.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-147.51.1.el8_1.noarch.rpm kernel-doc-4.18.0-147.51.1.el8_1.noarch.rpm ppc64le: bpftool-4.18.0-147.51.1.el8_1.ppc64le.rpm bpftool-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-core-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-cross-headers-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-core-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-devel-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-modules-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-modules-extra-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-devel-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-headers-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-modules-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-modules-extra-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-tools-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-tools-libs-4.18.0-147.51.1.el8_1.ppc64le.rpm perf-4.18.0-147.51.1.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm python3-perf-4.18.0-147.51.1.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm s390x: bpftool-4.18.0-147.51.1.el8_1.s390x.rpm bpftool-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm kernel-4.18.0-147.51.1.el8_1.s390x.rpm kernel-core-4.18.0-147.51.1.el8_1.s390x.rpm kernel-cross-headers-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-core-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-devel-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-modules-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debug-modules-extra-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-147.51.1.el8_1.s390x.rpm kernel-devel-4.18.0-147.51.1.el8_1.s390x.rpm kernel-headers-4.18.0-147.51.1.el8_1.s390x.rpm kernel-modules-4.18.0-147.51.1.el8_1.s390x.rpm kernel-modules-extra-4.18.0-147.51.1.el8_1.s390x.rpm kernel-tools-4.18.0-147.51.1.el8_1.s390x.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-core-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-devel-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-modules-4.18.0-147.51.1.el8_1.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-147.51.1.el8_1.s390x.rpm perf-4.18.0-147.51.1.el8_1.s390x.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm python3-perf-4.18.0-147.51.1.el8_1.s390x.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.s390x.rpm x86_64: bpftool-4.18.0-147.51.1.el8_1.x86_64.rpm bpftool-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-core-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-cross-headers-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-core-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-devel-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-modules-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-modules-extra-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-devel-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-headers-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-modules-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-modules-extra-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-tools-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-tools-libs-4.18.0-147.51.1.el8_1.x86_64.rpm perf-4.18.0-147.51.1.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm python3-perf-4.18.0-147.51.1.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.1): aarch64: bpftool-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm kernel-tools-libs-devel-4.18.0-147.51.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm kernel-tools-libs-devel-4.18.0-147.51.1.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.51.1.el8_1.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm kernel-tools-libs-devel-4.18.0-147.51.1.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.51.1.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-2020-26541 https://access.redhat.com/security/cve/CVE-2021-33034 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 iQIUAwUBYOXArtzjgjWX9erEAQioUQ/4/Axx0DYls6BV1RmNf6kD+L4w6DctVd7b 0V2DwRG6iIl+ZXJ0j7zm3uUhcjNrV4V/Slkxuhgq42Ps5EfDC7KeIIZw9s1UiPwo 9ZDhkLXNX2zkIxaswTGQtkNNNZ31AdcNLaCXOI4RbObnd2xJ0vxavPnqGIerrPGU 2KnUCwyBZvEhP0ZTGzsfj5DOvRpNhM6ymHYad1D65lDnBkcNgzuOE1cEgjgT/NS+ GG2MclzKKNXpAplZyic8hRyahty2LtoQDkYI2mQ7kase75XrSvhCPYXOeoGjQ/EH +54TWHgOzCqooVO36832MI38b4Re1psCfbsmrfulwIhcCVrJ1/T2QgrnXuLLGOVL 0fc11JIBlsMSPooqAWKo4Fo3bI/afhFuPWah3Yh1pt47Mv1YYPpTzJ+qiRwkXDij yFKAlDrqj6gFhRIlVNp6M7rjJ25O27Tcnu3BPZya3otYqfFb72V3KI5HhSrRoE/C oEjIqsB18o/48E1BGxlnMB8paRORZeOtt0+sy9/C1slPvDJhZK83lZKqrG97K/cR HbbEe6kKUzTPF151FoIU+bpQJNmH0MwPitwej+5wDS2EPSCCzCI2YmmDR3Xo4wF3 CLYaCEl5J78arROaINf+prGZEcYnnpso4Ox9E96U7+//FWgu10RODb92G0MystLF 8AeiriP0EQ== =BIB9 - -----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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