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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2070 kpatch-patch security update 16 June 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kpatch-patch Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 8 Red Hat Enterprise Linux WS/Desktop 8 Red Hat Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-12657 Reference: ESB-2020.2006 ESB-2020.1830.2 ESB-2020.1779.3 ESB-2020.1768.2 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:2567 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2020:2567-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:2567 Issue date: 2020-06-15 CVE Names: CVE-2020-12657 ===================================================================== 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: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body (CVE-2020-12657) 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/): 1832866 - CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kpatch-patch-4_18_0-193-1-3.el8.src.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.src.rpm ppc64le: kpatch-patch-4_18_0-193-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debuginfo-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193-debugsource-1-3.el8.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debuginfo-1-1.el8_2.ppc64le.rpm kpatch-patch-4_18_0-193_1_2-debugsource-1-1.el8_2.ppc64le.rpm x86_64: kpatch-patch-4_18_0-193-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193-debuginfo-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193-debugsource-1-3.el8.x86_64.rpm kpatch-patch-4_18_0-193_1_2-1-1.el8_2.x86_64.rpm kpatch-patch-4_18_0-193_1_2-debuginfo-1-1.el8_2.x86_64.rpm kpatch-patch-4_18_0-193_1_2-debugsource-1-1.el8_2.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-2020-12657 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 2020 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXufFutzjgjWX9erEAQh5UA/9H8nIoMCzGLF6Tu3lb/Q1QcwkvmOyTED2 Dp0KO1o83P4snEgAXd7Mm5oNKkeiKJk5FtpICXOGy9ap1T5eddk4+TSHv0Q/1wTF w2n5oghhFOC5dq72Oyjemme+LZ1Q+DemgHuWsxRXSjp9/rHhR4AVf9gdTREDC1A0 /khRO93SM5QGgQPC2KvMSxwC+i1tlA8wFlr/M0ySBEO9dJxXKe4zCUm1WgLjqHb+ nLTshqNLWPGE/MxQm9EjqgM+4FHt6AgXh/KNvx1tTwmo9ZR63i/8H+QoJBn6MToP 0AlCKcZgBDy9WmRwYTF5+grPzZwvuMbGo6ht8ReZbUz8dCBbfj556Sg475wjydOL vTLNdzaXlGna1fkLEbku9Fb0G3Q+93JCQqqXcOYTcP6QYZfLRJjNtWLRWzYD8FOg t+j4PolxUcKDT0YzFCO45ZXoh8VaTAuQ+uNZVpAEzgewNCPy13sHq23TGY0Owu+P V0ajHBch78RMdfsoLfioc4g0bTJFyAg7i/gdmVAcf5joKictWxcDHyMrGKgb5UaF JFUv5Wt2u4VfqRnPuCOgdAyHkVcZFPUHxCbsyyUt4gqmHRdQe8XZUAej2Mc6LJlG IGAeRw9og79Jl4tjyQhYVA4VkAXC4GVyEzh3QR1o9Q0GusTYXZt2BHEvom/h0gad Hy3u+qjQAoc= =3c6o - -----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: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXugmCuNLKJtyKPYoAQg2SA//f+Ibd52GXB64CptpBzNHbk59CcjbO3kW F5i5IyBc1BblvJUMR+0haIrEan8t6nZ38rVrVv+5mfsht2+xNKBMROD3F4VRbSH4 1DGcDqtggXZN5EDEqR6H5C9Ohq0h8OkeNDQLQtd+15bJ9CzvVU+Kylku1zC3xezz wQDLOEZKJNhPJ7pUxcc07Uz5NAtOdJTu5D8oEf2pzg17/rTO96LfgMRVd5bRVmuy t3AXQ6ABuDPb6HZFrYOw7sLQ0B+Iu4kXsTFuWu4iWBtbn4FV7mJWv+lu8uhDAch6 6edE/z8JSubs9IIWuf0NeBD27kXw9g3zgvBDLkRt8laHoKHap70yg2Hm93yogqPK zzZEHrHDD2QNKnmpnTab1CgwTvhxqBQiZh/KhwzRZYQUk9dibJA1cfLanKhZ5gty Joqxabm+3+uVrlH48YYdGoDWfQe5c6rf35ec7T/X71ci13Run9itVurXNB8fRyn7 cygEotdKNCYsxiDONn8cFsS/vk0qQDesmvht0i71joYPRRn5++vquMB1zCI1tmfq 0q2fgM5kwkg6bQ69ltGjafndOdAOUuNYQap6cJZVDxDVXyzgGA+oYzKvkqK+veQQ zhUS3Zv9YEC8dbg7opemwoguN2RfP/3imAwTIsb7y+YIawXN+l1XM50jOnDvM++S 6sIHdPDn4Ps= =tL7A -----END PGP SIGNATURE-----