17 August 2016
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1976 Important: kernel security update 17 August 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-2016-4565 Reference: ESB-2016.1932 ESB-2016.1818 ESB-2016.1606 ESB-2016.1587 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2016-1617.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2016:1617-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1617.html Issue date: 2016-08-16 CVE Names: CVE-2016-4565 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.2 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. 6.2) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw was found in the way certain interfaces of the Linux kernel's Infiniband subsystem used write() as bi-directional ioctl() replacement, which could lead to insufficient memory security checks when being invoked using the splice() system call. A local unprivileged user on a system with either Infiniband hardware present or RDMA Userspace Connection Manager Access module explicitly loaded, could use this flaw to escalate their privileges on the system. (CVE-2016-4565, Important) Red Hat would like to thank Jann Horn 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/): 1310570 - CVE-2016-4565 kernel: infiniband: Unprivileged process can overwrite kernel memory using rdma_ucm.ko 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.2): Source: kernel-2.6.32-220.67.1.el6.src.rpm noarch: kernel-doc-2.6.32-220.67.1.el6.noarch.rpm kernel-firmware-2.6.32-220.67.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.67.1.el6.x86_64.rpm kernel-debug-2.6.32-220.67.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.67.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.67.1.el6.x86_64.rpm kernel-devel-2.6.32-220.67.1.el6.x86_64.rpm kernel-headers-2.6.32-220.67.1.el6.x86_64.rpm perf-2.6.32-220.67.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.2): Source: kernel-2.6.32-220.67.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.67.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.67.1.el6.x86_64.rpm python-perf-2.6.32-220.67.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.67.1.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-2016-4565 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <email@example.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFXsvZfXlSAg2UNWIIRAp0BAJ4p0Kf+t7DwkMn/Tn1CLfedos0nWgCfRhKU X0nvzO4iImbN7v9J4IMfYto= =fclQ - -----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 firstname.lastname@example.org 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. 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