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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2513 Important: kernel security update 28 October 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-5195 Reference: ESB-2016.2498 ESB-2016.2497 ESB-2016.2473 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2016-2120.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2016:2120-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2120.html Issue date: 2016-10-27 CVE Names: CVE-2016-5195 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support and Red Hat Enterprise Linux 6.5 Telco 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 Server AUS (v. 6.5) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.5) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important) Red Hat would like to thank Phil Oester for reporting this issue. 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/): 1384344 - CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.5): Source: kernel-2.6.32-431.75.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-431.75.1.el6.noarch.rpm kernel-doc-2.6.32-431.75.1.el6.noarch.rpm kernel-firmware-2.6.32-431.75.1.el6.noarch.rpm x86_64: kernel-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.75.1.el6.x86_64.rpm kernel-devel-2.6.32-431.75.1.el6.x86_64.rpm kernel-headers-2.6.32-431.75.1.el6.x86_64.rpm perf-2.6.32-431.75.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.5): Source: kernel-2.6.32-431.75.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-431.75.1.el6.noarch.rpm kernel-doc-2.6.32-431.75.1.el6.noarch.rpm kernel-firmware-2.6.32-431.75.1.el6.noarch.rpm x86_64: kernel-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.75.1.el6.x86_64.rpm kernel-devel-2.6.32-431.75.1.el6.x86_64.rpm kernel-headers-2.6.32-431.75.1.el6.x86_64.rpm perf-2.6.32-431.75.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.5): Source: kernel-2.6.32-431.75.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.75.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm python-perf-2.6.32-431.75.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 6.5): Source: kernel-2.6.32-431.75.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.75.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.75.1.el6.x86_64.rpm python-perf-2.6.32-431.75.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.75.1.el6.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-2016-5195 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/2706661 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFYEcadXlSAg2UNWIIRApaQAKC+3ji01JFJQRL3eiuf2KjdfWsHFACeOTzI zDGZGJupVIu4rviID2pAIyQ= =jXhF - -----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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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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