Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2285 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-2021-4028 Original Bulletin: https://access.redhat.com/errata/RHSA-2022:2188 Comment: CVSS (Max): 7.0 CVE-2021-4028 (CVSS:3.1/AV:L/AC:H/PR:L/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:L/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-2022:2188-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:2188 Issue date: 2022-05-11 CVE Names: CVE-2021-4028 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 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. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - 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) 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() 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: kernel-3.10.0-693.100.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.100.1.el7.noarch.rpm kernel-doc-3.10.0-693.100.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.100.1.el7.x86_64.rpm kernel-debug-3.10.0-693.100.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.100.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.100.1.el7.x86_64.rpm kernel-devel-3.10.0-693.100.1.el7.x86_64.rpm kernel-headers-3.10.0-693.100.1.el7.x86_64.rpm kernel-tools-3.10.0-693.100.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.100.1.el7.x86_64.rpm perf-3.10.0-693.100.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm python-perf-3.10.0-693.100.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.100.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.100.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.100.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.100.1.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/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 iQIVAwUBYnvxv9zjgjWX9erEAQishg/6Axs+mtynl4e6ma6bWP+WheTW3eqTc0GS owMt7X6GYB0kKza0fcx5+J5iq+NwyJVPwdOn4DJFjqqvSCZFULcvFLDahmiUsMWd 6BoycZ/Fpc0oCMadMh9puYMaJBY0fRMcu56gUIL8Xun6t7DZaVh648J//R2Un1ff /towRDfY9EEGD2BWbJ/79mBabS8C752HoyOvtwc70dhXVDF3YGH4tV2jqpp11rH7 PZUAXtfXD0oJ76i1rYKrbq/m4uD0meN/tCgn+tF867fkGrZWrOm1qdSU7SBkt+kK 4h0Slr/6Bj4sFs3C9U1SRwGkUAK+3WXLcQDFhAlsxVcuFsdZk6Tk5DS769EkUfKn RrgtEwMHWDrmU4eJS+VjuuImgSbqZJl6BI+5LetM3qAJlvPSRwecVWcGScqhoVpg pX3tH0kAnH1+zAxAGqHczh4x1GCGKo0qLX/whIltvwnOml4q135N8i/fGCw4OTVb dcuaD6kELi+i4DIaoc7v6mSmTzOVwUB2wk5abbCApSeIN4y+Tkexkxsy7/XM6k05 GDvMICq0sEVRrPC+m6jq+J7vbENsIiAeMWHQP/atbW/FMQDeUCRqkQewUKjFhkhi HSYfHfW/X3yfvq3Mc7aoMAkZzo3XmKUpxS3x+Bx3WKoC2lkK8L9VT64az5/A0F76 eA4+w/hwpak= =+YMJ - -----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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYnw/W8kNZI30y1K9AQhxEg//Tbk3MyowlnL/I2JyVS4RsZPhebWb8DkX pQiyRoUf9JQDMgrQ6kLBegPzKTM5CACe3N1qvbKHRx0YkwJznyVxTjjdyGfvHiEh YIDjLPl7+G29qGXXAgbUwHUEut6a7LtbM0mIwXS2Fq/u6Un2wpgHo0lW78dU9yg2 CP5A0ACL2wr+jPAF/zRE73EdCJGSvGl639e88DnW6Jl3G76ihMwrgY+S7weEKJHG ks2jggLGbR7ojITj/ohdZ/ZdYh+Kl8v7y0xCHCfHL0mdDEN67Mqeu98KIoGzfsEu CGEza9Q9Q9pX/XrKsGdaAXrtg6ne4NnZmrtmriKeDauF3QT/z1gPc9ZB8uvtx5jt dIZkJgDXr4J9wMleJYYqnFPuhk9PlLjdEmpsj4Cua59avr/qyUZcUibDSSXXXl3Q PsXq1P4Pd3BrN3NemE2u4vY70OfT7tiPfHlg+kqJ3eNbakxPqNUWUkBLlrj+gemS 7xvIYbhOGXPFvMVs1261GhOFEFC/zD5t+oHJvpFSmjheWi5uBINc35zghDN5QDiI C1045J83oYsFB9MMRTYs8DkJHB0jdj9wwmoaN9L6Ey8Ju8s/kB7tW4YEZJdO/ZGu 2Cj02WWvgRUG44ApkttblNDsg6fe5GYW4a5fkyFgU5cS1/G3yBspOgQQLgmWKnmk Um4C01cmCX4= =02C/ -----END PGP SIGNATURE-----