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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2286 kernel security update 12 May 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2022-0492 CVE-2021-4083 CVE-2021-4028 Original Bulletin: https://access.redhat.com/errata/RHSA-2022:2189 Comment: CVSS (Max): 7.4 CVE-2021-4083 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2022:2189-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:2189 Issue date: 2022-05-11 CVE Names: CVE-2021-4028 CVE-2021-4083 CVE-2022-0492 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.3 Advanced 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 Server AUS (v. 7.3) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.3) - 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 RDMA listen() (CVE-2021-4028) * kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083) * kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492) 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. 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/): 2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen() 2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it 2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.3): Source: kernel-3.10.0-514.101.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.101.1.el7.noarch.rpm kernel-doc-3.10.0-514.101.1.el7.noarch.rpm x86_64: kernel-3.10.0-514.101.1.el7.x86_64.rpm kernel-debug-3.10.0-514.101.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.101.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.101.1.el7.x86_64.rpm kernel-devel-3.10.0-514.101.1.el7.x86_64.rpm kernel-headers-3.10.0-514.101.1.el7.x86_64.rpm kernel-tools-3.10.0-514.101.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.101.1.el7.x86_64.rpm perf-3.10.0-514.101.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm python-perf-3.10.0-514.101.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.3): x86_64: kernel-debug-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.101.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.101.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.101.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.101.1.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-2021-4028 https://access.redhat.com/security/cve/CVE-2021-4083 https://access.redhat.com/security/cve/CVE-2022-0492 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 2022 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYnvxsNzjgjWX9erEAQhaEg/8C1U0jgxb3hgPLUkhP6Dl7rcQywOALKWc 4KGkUpW9b+RBhzO4oApL13njUWVaFtOHe2XRW5+o/RUYzpZUNrfqwWGUHeu2OBJK y7cim7/f3fKjAb5uERFay3aHaTZZfuDkl55gQBfXRan1ISTKLxsEBBmdVPfx0Lj/ 3VsFjjXIXtXAl7QbhoB1xR8XtwEWJj00o4vR8DjLagdJlMLLozBaimBpU4X/ecEr B62infsNqNTYl+VFxJbDZchl/WOb47XSw3/bI0laWpiraXCaHWEUw923gpLuBwrW eh4yQCszqa4NvI1hHmNOfbry9yn8CBBd3qHWbZ9RnBgrPuiVo0/agS7SyIAy1L1H GgMKrEFIvnG+UL5s1p7f3rlKNnyEkih4TXBYwFMAc0dxuF5fdzNUuVZ5vih/JpZw V6zBsgwUFIG9n04/SX8ox6boCcHYkWoZRngEunCfhYh3NkM3uG+Pzu/xOqA50nU0 +E9aDV6yg55D0WiY3K76CxfbaAAYEANGtdAMON+0Fo7LbopAVsUK8Ia8YbODVJ5/ WW+5MsvKuM7gnyEYMrqIfVGV3LNLUBbCiFlJsl3bpqyKcJTTjt8FexilD2XqcuoY 4M0yiFJybO4gUevPD892r5cFoNtBjJTV83Dxa52MpqV7JNUc8cW+oX4jbG/b9Htn NO69ME6oAD8= =pKm6 - -----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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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYnw/gMkNZI30y1K9AQgQZA/+IDtDW8TNMA7JSMRO/nNUhkzwaElOEmo9 9xZqsvZH7vdiNyuKlM8gt1Qt3J/l+GrkvfAxxUHvTRe5xEqRYhAfsFv/pLEA+PO0 vBWlwZ27IbX6iYhhQx4jwkvpNy7aMfSlYURLC4RZSOoTHHnf9N5d2UEIyDuosVv2 FVl+c2TR8MtOz+pkWXgURq9P6oWJMbxTT7lU8zTNmtGTXL0HuskEFNv21I5M7dQ4 pSvRJ894u4a9HVxrSWuhO2SqXQCToWYtsWJEJW9ZoJ6PgQiqfv+Ia4RwQyy35gZd msK+LybWR6XheWeFaRGCdhSqPgPFEuFnANCF4Lg/QtByUCS2i00ME2hgcc5Ljh9R Pz++6nvuu8upWEkapHO6N2TEu6Q5QikpScD7QWMoHL//rJ5bTkubsI0TWij+Bps0 RmfOHvjghtS1vEL491PAMP5YH5/j/iEKr6IS8Q2y/uac38lqStWZu4bXm3/wRaUa IJ3BfdVMV4dDQP72nUK0j7iLv0Y93TMD1f069sjY3vgA6vlxkRx6wJTXJQqPm/Ax kUMqvzo6vySAc+j5HXXjhB4vNVots0peB/RfZ6wFM3zfGE1Lg1JOhOUchdqHL1XF A+8O6Tooo6hWUBQyD1i8CaBaeascEBJJvZ8g6c27+UltaRjscr5io6UbaxwnQ0PF 2gDKG1pvDZI= =VwBy -----END PGP SIGNATURE-----