-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2021:3044-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3044 Issue date: 2021-08-10 CVE Names: CVE-2021-3609 CVE-2021-22543 CVE-2021-22555 ===================================================================== 1. Summary: An update for kpatch-patch 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: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609) * kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) * kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555) 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/): 1965461 - CVE-2021-22543 kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks 1971651 - CVE-2021-3609 kernel: race condition in net/can/bcm.c leads to local privilege escalation 1980101 - CVE-2021-22555 kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kpatch-patch-4_18_0-305-1-4.el8.src.rpm kpatch-patch-4_18_0-305_10_2-1-1.el8_4.src.rpm kpatch-patch-4_18_0-305_3_1-1-3.el8_4.src.rpm kpatch-patch-4_18_0-305_7_1-1-2.el8_4.src.rpm ppc64le: kpatch-patch-4_18_0-305-1-4.el8.ppc64le.rpm kpatch-patch-4_18_0-305-debuginfo-1-4.el8.ppc64le.rpm kpatch-patch-4_18_0-305-debugsource-1-4.el8.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-debuginfo-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_10_2-debugsource-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_3_1-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_3_1-debuginfo-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_3_1-debugsource-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_7_1-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_7_1-debuginfo-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_7_1-debugsource-1-2.el8_4.ppc64le.rpm x86_64: kpatch-patch-4_18_0-305-1-4.el8.x86_64.rpm kpatch-patch-4_18_0-305-debuginfo-1-4.el8.x86_64.rpm kpatch-patch-4_18_0-305-debugsource-1-4.el8.x86_64.rpm kpatch-patch-4_18_0-305_10_2-1-1.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_10_2-debuginfo-1-1.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_10_2-debugsource-1-1.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_3_1-1-3.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_3_1-debuginfo-1-3.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_3_1-debugsource-1-3.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_7_1-1-2.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_7_1-debuginfo-1-2.el8_4.x86_64.rpm kpatch-patch-4_18_0-305_7_1-debugsource-1-2.el8_4.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-2021-22543 https://access.redhat.com/security/cve/CVE-2021-22555 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 iQIVAwUBYRJft9zjgjWX9erEAQhmOA//WVSV8aY+qLdqbpGmI5ojwRSdCIud5BKe KQYOshJt9aemQwEmRIYDduCNLE2ygyf4BdeI7isZ51GPz9ZIv8sz8SLmw2sGKTmW Iv0iYvQe+sf4SgYM6zLoSVFVI44qg5pB13Yq5wwO8jCqoon2d46imUfNbMuLrAdt 66EsxivSw6eyEi1ayfvsrmZD7l85L8WSyXuA48UbXoFLPVJWOQahuS3l/BfTkg6X 2rfw/xDzEeud12laDPb9Z53URUJu19Vo2otfiy7EzYbueezzfHc3Noo8WcJkAOu/ TCLMa49/1zvIguQt33d1R0bZoEyY/lon/c3RiSlCBTzovsiO104r0WMBV/0OfUj7 ANubKFOGLYMlH3DgTCrZoVQhCAaX+7fjknXSI4dPOsJSi0rDzzriCwU0QEIOAy/x 0cq/Z2vfc1HM39U2/6NZ9Hhxuyzwui7SFkidx5bbreI8KI2myE/s1GM5RRlZ+TNm qp224MlBH5xXE3oystrytD9q2RNHloqp3yLCjbWoOLrpglhQl1HZ4r8sZD1oug6d qZST4zeb1W0L/u/63l4oEcX88CazjAJD8pEf/J51IRnAcDc7FD7sA5X3iRfk5a26 jlF56ZGC1eMXb+cJcR2CTSM6QmzE+aotn53YDVUElj8o9ex5zf8b67F+qD/JnzhH ARbpRunFW5M= =l2X+ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce