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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3896 kpatch-patch security update 16 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kpatch-patch Publisher: Red Hat Operating System: Red Hat Impact/Access: Increased Privileges -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-43267 Reference: ESB-2021.3889 ESB-2021.3888 ESB-2021.3887 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:4645 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2021:4645-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4645 Issue date: 2021-11-15 CVE Names: CVE-2021-43267 ===================================================================== 1. Summary: An update 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 Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64 3. Description: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es): * kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267) 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 5. Bugs fixed (https://bugzilla.redhat.com/): 2020362 - CVE-2021-43267 kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kpatch-patch-4_18_0-348-1-1.el8.src.rpm ppc64le: kpatch-patch-4_18_0-348-1-1.el8.ppc64le.rpm kpatch-patch-4_18_0-348-debuginfo-1-1.el8.ppc64le.rpm kpatch-patch-4_18_0-348-debugsource-1-1.el8.ppc64le.rpm x86_64: kpatch-patch-4_18_0-348-1-1.el8.x86_64.rpm kpatch-patch-4_18_0-348-debuginfo-1-1.el8.x86_64.rpm kpatch-patch-4_18_0-348-debugsource-1-1.el8.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-2021-43267 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 iQIVAwUBYZJxjtzjgjWX9erEAQiVyw/9FK7JyigLBhM1KFM5qt5j2on6e3lxkR+F KUGgu5QTBzOIaib8g8hiAWV5zz5oeqTjxseHKdEt5uoqav0MzDnY0HcjPIaIHYXT WDYnN9EBOGqSsXgEHXotchh6QZROpX2RiBA2tKxhV99ZkoGf6FhXzkO3kkbNGAo2 71tzr6bopwPtaX/h2lVb5fgb4+zNwCSdfLUqAwnlkt7JhIYRLMr7SkU9ryNHjXJh IIOjlOMt0NYL+6CMa9KFwZKQJAU5z/BRm2DB5PUvec2LxMDXlOHkmVymIvwqqSju DUjX+imScuh1yNpBDhgjwF6g4e5Gj2Nr4kYVCEBjWy9ontUSItu4GMOaI9vwq5SR aiIq5wzxKe2vp75qACbiml2f5g5+uPuBI8CUnxHGXv8Rq5SdcMVaNyuDmvkluVTi Sz7uP5fdY/iYkZ/zY4YSLGe36xgWfEV8Zk22IZ/Co+/UDk1Dh+RR7jE9IZ02QFZH 3d1lhNpqAi8SCFh7zDRBnFvmJ0UGl+7JkJrMC4WhACPfmMgtkjD0Uvhko+a7tPy7 2Vf7MXtYuTfhJXNe/OxZi6mLbZlpDA1QUjaRBzlVRLxGzpBqvRWMQjXB4JKp/bI4 xHbjH7/DcrmeudoZSALa3WTGedrB084NOmrS81upi7Ic/PuQv7oaIQX5GK3pq2HT a6aaPoP9UG4= =wms6 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. 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). 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