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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0843 kernel security and bug fix 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 -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-25212 CVE-2020-24394 Reference: ESB-2021.0566 ESB-2021.0365 ESB-2020.4406 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:0760 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2021:0760-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0760 Issue date: 2021-03-09 CVE Names: CVE-2020-24394 CVE-2020-25212 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Server AUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: umask not applied on filesystem without ACL support (CVE-2020-24394) * kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212) 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): * Security patch for CVE-2020-25212 breaks directory listings via 'ls' on NFS V4.2 shares mounted with selinux enabled labels (BZ#1919141) 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/): 1869141 - CVE-2020-24394 kernel: umask not applied on filesystem without ACL support 1877575 - CVE-2020-25212 kernel: TOCTOU mismatch in the NFS client code 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: kernel-3.10.0-693.82.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.82.1.el7.noarch.rpm kernel-doc-3.10.0-693.82.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-headers-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.82.1.el7.x86_64.rpm perf-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: kernel-3.10.0-693.82.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.82.1.el7.noarch.rpm kernel-doc-3.10.0-693.82.1.el7.noarch.rpm ppc64le: kernel-3.10.0-693.82.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.82.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.82.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.82.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.82.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.82.1.el7.ppc64le.rpm perf-3.10.0-693.82.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm python-perf-3.10.0-693.82.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm x86_64: kernel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-headers-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.82.1.el7.x86_64.rpm perf-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: kernel-3.10.0-693.82.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.82.1.el7.noarch.rpm kernel-doc-3.10.0-693.82.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-devel-3.10.0-693.82.1.el7.x86_64.rpm kernel-headers-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.82.1.el7.x86_64.rpm perf-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: kernel-debug-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.82.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.82.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.82.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.82.1.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-2020-24394 https://access.redhat.com/security/cve/CVE-2020-25212 https://access.redhat.com/security/updates/classification/#moderate 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 iQIVAwUBYEc+X9zjgjWX9erEAQhNtA//ZW255TWAuB3fQ3zwQq90dvDZGvyPsv9q 0AyJ2Z2BzhBsEfsSDqwm5mtjWFZWdTBiFwp4zLNd48+faut/WMmTsxA51BXJow42 S2Q+mX9iJMwuUFoSdtk+EVlbTyZH3rJpDVjkjDmJP4Gq5N8LgHbwn1cZwKwpb6AB NeiUPiW0XSCV0DkGkDFZk373eNUp938T8PKS7Aq+xPZoahlOAdx+9dKYrEIOYoiM ggMad7WIkWo3SrXaoJ26aC62PB97MsaTYtbe6RYDI9uhlwr3kEo6H5gwuYuXNlVz BHcBGQZ/Bd9Dg4BAA6DPaTL4aJupxyUPoyMOEic7cKxAGseqZWj3OZOaP4L2lOUQ 6u/mujIe0uOaTQ3qKzGCEQb483KVJeP6HB2tiWW1utT2CaCc9C562C4HZ8aqRV2W RnplSS/FDXCBrFW7nEpmIKDb8OUJgdrk0CnJ7BjAZm9nmH71rROsKV5zdXp4muCE kF/b7zq/V0g5JWPM9aF0bdFH5BeJYb2gnUs9cQV0szDqdJJrRmrDzCuOOND0MMjV lsRddLJDmz8znYtGmFubIEGLerHPYB601lEwDBa5Z3JzN0zeJXo5DpDstpe0D601 aHHQaPgYFIrse9bY4k5ydMmIyqoeCWwjJcNNECPBmKzyyZry8sddqp1le5xBgwxk rJ+yLW5g+eU= =1EW1 - -----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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYEgNe+NLKJtyKPYoAQj1bQ//bLSStwIkdkyi5Ejpky8BjsxxU4myIraX RPLkUg9h5FJhQsvvAc+DStykl9HMWM3txZcL6MdcaCHxJy9Vu2FHM7Nv1N9/RzMw 6IL4oaRAC28+hd/0VWJZ5dfjY8mEvLsokeJ70lmBts2HkH2qB0s7CZNpOAtwdyJf l7lfXvU8eWlMkmqiw6weF4ukpK0ed06iD+Gjp/U96qw0xkycGRAyJMEEVenBsoe/ 0fAGQ3qn9FDQy8MAicATNM7/RGk7Fcf3fV7dw/9wrBs5zOt+00Cfdu5CSl3KaojI uTUclsFVOjzLoObkJ26CiWCnkVTaUFNkX0/xK80yxaA26t8hF6kPQWf1VjWYNs1u iumz7UMBB5uYPh1PjVawipGYu9vb3D7VbX+4M15D8EEjv/5bpS4dKeMaejJyvdAQ GlocYvhCX2aNxCHmipF6fpd844WAs3amW9XZjli7XYnMwmKDqroTiWlSpHyrqb92 x3UWHTLG76A9xj8eiE75LGNDKe+qKX6CMrQX/F9gD/xv+cIGSUHcemGZVEbrHEi5 a45vwXP/2DSKWSJdSmknuTee2gYWjTVZBNlCj2EWYXYXtw8eFHUoT5UYQ/3O67da X2onM1HAEM+hOuJQdAR8//nTgIkYC3s3CvM3RtSO2AjFZHBfGGfZuXQ1ClDkJw1J HWAexE842UE= =XlCU -----END PGP SIGNATURE-----