Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.1202 Low: kernel security and bug fix update 19 December 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-2313 Reference: ESB-2012.1145 ESB-2012.1098 ESB-2012.0940 ESB-2012.0917 ESB-2012.0797 ESB-2012.0796 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1589.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: kernel security and bug fix update Advisory ID: RHSA-2012:1589-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1589.html Issue date: 2012-12-18 CVE Names: CVE-2012-2313 ===================================================================== 1. Summary: Updated kernel packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6.1 Extended Update Support. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server EUS (v. 6.1) - i386, noarch, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: * A flaw was found in the way the Linux kernel's dl2k driver, used by certain D-Link Gigabit Ethernet adapters, restricted IOCTLs. A local, unprivileged user could use this flaw to issue potentially harmful IOCTLs, which could cause Ethernet adapters using the dl2k driver to malfunction (for example, losing network connectivity). (CVE-2012-2313, Low) Red Hat would like to thank Stephan Mueller for reporting this issue. This update also fixes the following bug: * The kernel allows high priority real time tasks, such as tasks scheduled with the SCHED_FIFO policy, to be throttled. Previously, the CPU stop tasks were scheduled as high priority real time tasks and could be thus throttled accordingly. However, the replenishment timer, which is responsible for clearing a throttle flag on tasks, could be pending on the just disabled CPU. This could lead to the situation that the throttled tasks were never scheduled to run. Consequently, if any of such tasks was needed to complete the CPU disabling, the system became unresponsive. This update introduces a new scheduler class, which gives a task the highest possible system priority and such a task cannot be throttled. The stop-task scheduling class is now used for the CPU stop tasks, and the system shutdown completes as expected in the scenario described. (BZ#876077) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258 To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system. 5. Bugs fixed (http://bugzilla.redhat.com/): 818820 - CVE-2012-2313 kernel: unfiltered netdev rio_ioctl access by users 6. Package List: Red Hat Enterprise Linux Server EUS (v. 6.1): Source: kernel-2.6.32-131.36.1.el6.src.rpm i386: kernel-2.6.32-131.36.1.el6.i686.rpm kernel-debug-2.6.32-131.36.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-131.36.1.el6.i686.rpm kernel-debug-devel-2.6.32-131.36.1.el6.i686.rpm kernel-debuginfo-2.6.32-131.36.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-131.36.1.el6.i686.rpm kernel-devel-2.6.32-131.36.1.el6.i686.rpm kernel-headers-2.6.32-131.36.1.el6.i686.rpm perf-2.6.32-131.36.1.el6.i686.rpm perf-debuginfo-2.6.32-131.36.1.el6.i686.rpm noarch: kernel-doc-2.6.32-131.36.1.el6.noarch.rpm kernel-firmware-2.6.32-131.36.1.el6.noarch.rpm ppc64: kernel-2.6.32-131.36.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-131.36.1.el6.ppc64.rpm kernel-debug-2.6.32-131.36.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-131.36.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-131.36.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-131.36.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-131.36.1.el6.ppc64.rpm kernel-devel-2.6.32-131.36.1.el6.ppc64.rpm kernel-headers-2.6.32-131.36.1.el6.ppc64.rpm perf-2.6.32-131.36.1.el6.ppc64.rpm perf-debuginfo-2.6.32-131.36.1.el6.ppc64.rpm s390x: kernel-2.6.32-131.36.1.el6.s390x.rpm kernel-debug-2.6.32-131.36.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-131.36.1.el6.s390x.rpm kernel-debug-devel-2.6.32-131.36.1.el6.s390x.rpm kernel-debuginfo-2.6.32-131.36.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-131.36.1.el6.s390x.rpm kernel-devel-2.6.32-131.36.1.el6.s390x.rpm kernel-headers-2.6.32-131.36.1.el6.s390x.rpm kernel-kdump-2.6.32-131.36.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-131.36.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-131.36.1.el6.s390x.rpm perf-2.6.32-131.36.1.el6.s390x.rpm perf-debuginfo-2.6.32-131.36.1.el6.s390x.rpm x86_64: kernel-2.6.32-131.36.1.el6.x86_64.rpm kernel-debug-2.6.32-131.36.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-131.36.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-131.36.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-131.36.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-131.36.1.el6.x86_64.rpm kernel-devel-2.6.32-131.36.1.el6.x86_64.rpm kernel-headers-2.6.32-131.36.1.el6.x86_64.rpm perf-2.6.32-131.36.1.el6.x86_64.rpm perf-debuginfo-2.6.32-131.36.1.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/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2012-2313.html https://access.redhat.com/security/updates/classification/#low 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFQ0PJ2XlSAg2UNWIIRAvqhAJ4h7YjfPcZb4jS2Z2onO+34tHrczwCfe5cM 3091BJLajlLsHKt543x95kU= =eBBx - -----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 auscert@auscert.org.au 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. 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUNFwAu4yVqjM2NGpAQKoihAAh2S7nYMjnx0pEQZowuDJzFs7rremk6/O jIuPevvOr1KnhkXOVDbrgJVXrxYa961lDgojGEAmptvS/CmkoURAhpP6X86xiFgt 8EBMv8VC7oaEog8BM2R//Rasxf2xRsRf6RpVQ1nUP/mOeKdB15DFCnESpuxmSLjG tU3Jxe6FmyJA+mSP527RyCyhkuMXbR3MiAPAqth17WlOK0evrtk7sIPevEVeo3rq zlwCx7Nv3G0gbZwApsumOUmh9aLxPuAFPrv8TXzSyKGvz66a4twLtf6uMhxUGk5C RNhvZSz9kE4E76yhjMj2RhcOzSWodktjynfGQFFBl65UabLX1Zdq5tM3iB6rOD/D +kBBYzU8ylXRnKCv5ltaOlmcgECaT+iJ23j/RcYy58i9fH15qmg0neFV+CwRDoR4 vLAsA30LipgNnqEnOukDlPaORTOGv+/KtngqUEFRVhnPwpXQdHpp50LoAW8To5+k JDbIdjDEZSkNBDQPYvnMns1k3kkJjXe1N3oe3p8a+lsqwe7SNQK+8ngdO2X7VG0t SQJO4npIMCyg6IP4u+7qo5MeupdKgZK4u7jf1db0JAJ+O84D1cm9tplUYss9wORg BR/n0HoXxgeCc4uOuVEUDwKwph9Ut3eijTVLOJG0o5l8AQkYJ5u49MU6UVG2Zkbg Ch1dZAPJxUY= =LXQB -----END PGP SIGNATURE-----