-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2021:3442-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3442 Issue date: 2021-09-07 CVE Names: CVE-2021-3609 CVE-2021-3715 CVE-2021-37576 ===================================================================== 1. Summary: An update 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 Enterprise Linux BaseOS EUS (v. 8.1) - 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: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609) * kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715) * kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576) 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/): 1971651 - CVE-2021-3609 kernel: race condition in net/can/bcm.c leads to local privilege escalation 1986506 - CVE-2021-37576 kernel: powerpc: KVM guest OS users can cause host OS memory corruption 1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.1): Source: kpatch-patch-4_18_0-147_27_1-1-13.el8_1.src.rpm kpatch-patch-4_18_0-147_32_1-1-11.el8_1.src.rpm kpatch-patch-4_18_0-147_34_1-1-11.el8_1.src.rpm kpatch-patch-4_18_0-147_38_1-1-10.el8_1.src.rpm kpatch-patch-4_18_0-147_43_1-1-8.el8_1.src.rpm kpatch-patch-4_18_0-147_44_1-1-7.el8_1.src.rpm kpatch-patch-4_18_0-147_48_1-1-4.el8_1.src.rpm kpatch-patch-4_18_0-147_51_1-1-3.el8_1.src.rpm kpatch-patch-4_18_0-147_51_2-1-2.el8_1.src.rpm kpatch-patch-4_18_0-147_52_1-1-1.el8_1.src.rpm ppc64le: kpatch-patch-4_18_0-147_27_1-1-13.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_27_1-debuginfo-1-13.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_27_1-debugsource-1-13.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_32_1-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_32_1-debuginfo-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_32_1-debugsource-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_34_1-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_34_1-debuginfo-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_34_1-debugsource-1-11.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_38_1-1-10.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_38_1-debuginfo-1-10.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_38_1-debugsource-1-10.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_43_1-1-8.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_43_1-debuginfo-1-8.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_43_1-debugsource-1-8.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_44_1-1-7.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_44_1-debuginfo-1-7.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_44_1-debugsource-1-7.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_48_1-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_48_1-debuginfo-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_48_1-debugsource-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_1-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_1-debuginfo-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_1-debugsource-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_2-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_2-debuginfo-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_51_2-debugsource-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_52_1-1-1.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_52_1-debuginfo-1-1.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_52_1-debugsource-1-1.el8_1.ppc64le.rpm x86_64: kpatch-patch-4_18_0-147_27_1-1-13.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_27_1-debuginfo-1-13.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_27_1-debugsource-1-13.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_32_1-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_32_1-debuginfo-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_32_1-debugsource-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_34_1-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_34_1-debuginfo-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_34_1-debugsource-1-11.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_38_1-1-10.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_38_1-debuginfo-1-10.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_38_1-debugsource-1-10.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_43_1-1-8.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_43_1-debuginfo-1-8.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_43_1-debugsource-1-8.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_44_1-1-7.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_44_1-debuginfo-1-7.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_44_1-debugsource-1-7.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_48_1-1-4.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_48_1-debuginfo-1-4.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_48_1-debugsource-1-4.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_1-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_1-debuginfo-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_1-debugsource-1-3.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_2-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_2-debuginfo-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_51_2-debugsource-1-2.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_52_1-1-1.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_52_1-debuginfo-1-1.el8_1.x86_64.rpm kpatch-patch-4_18_0-147_52_1-debugsource-1-1.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-2021-3609 https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/cve/CVE-2021-37576 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYTd+AtzjgjWX9erEAQg2XQ/+JNE9xEZaBCk3fn0BUMjEARMXg9pUcsbq 5yfs/biyC0PPlwG1BxcJxnrH8uLMiI4a98v5K33K1hpnbXz4eOpQiX4v2LMSrKb3 GYT8Ncaw7512O+IPNkyh9m67uA7vmrCCiogBASpNr2NUHmg+S89KgonWBHujd8th CebFacZrqKlRs+x+eL/q/4SgLn+xUvODvjID/XYzhZxlTi+Zmj3tl9eo7yjdyUji 6GtMXoLaZdauyYPkkOljds0QNpkhXEUJK/s3LoZUVknE/wXCKHgSsgbhsXtXg+OG aoO23zbbI24hGxrdV/Hz6vHAShAeCKj4/PyYneu2+3TWHzJoBUF5yrwucfP4WnVR ICWNJXTHIngny1V9xqUrlnuHfjVD3gVz/oTPdah4jBKDXU14Knc4YVoBFbFgDDZR 83WQA/ExDl3/XieRXriV/AhQThn2m3wHWPx4KgcHFW2medU5houeoGg0sD7KxzYp n5XpDiGj62vlls9Fwg0lj/iTwPENZb/+EzhKDjHTaP1fukQuALkzE4HFAPXdw/Bi bsoZXh2bMVAsNal2PjHjy7TOXAnnxk4CydtuKljd1HeTKH6a3g2PIWG3ax5OBWil NLoS0HX9vzVITucsQqGFxQ74M09paeOHM0AKLoRMurIOQCjB42OjlJrowEiKwZT0 xYtrPyykHpg= =cy7m -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce