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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0079 Important: kernel security and bug fix update 24 January 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Linux variants Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-0056 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-0052.html Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running kernel check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2012:0052-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0052.html Issue date: 2012-01-23 CVE Names: CVE-2012-0056 ===================================================================== 1. Summary: Updated kernel packages that fix one security issue and three bugs are now available for for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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: * It was found that permissions were not checked properly in the Linux kernel when handling the /proc/[pid]/mem writing functionality. A local, unprivileged user could use this flaw to escalate their privileges. Refer to Red Hat Knowledgebase article DOC-69129, linked to in the References, for further information. (CVE-2012-0056, Important) Red Hat would like to thank Jüri Aedla for reporting this issue. This update fixes the following bugs: * The RHSA-2011:1849 kernel update introduced a bug in the Linux kernel scheduler, causing a "WARNING: at kernel/sched.c:5915 thread_return" message and a call trace to be logged. This message was harmless, and was not due to any system malfunctions or adverse behavior. With this update, the WARN_ON_ONCE() call in the scheduler that caused this harmless message has been removed. (BZ#768288) * The RHSA-2011:1530 kernel update introduced a regression in the way the Linux kernel maps ELF headers for kernel modules into kernel memory. If a third-party kernel module is compiled on a Red Hat Enterprise Linux system with a kernel prior to RHSA-2011:1530, then loading that module on a system with RHSA-2011:1530 kernel would result in corruption of one byte in the memory reserved for the module. In some cases, this could prevent the module from functioning correctly. (BZ#769595) * On some SMP systems the tsc may erroneously be marked as unstable during early system boot or while the system is under heavy load. A "Clocksource tsc unstable" message was logged when this occurred. As a result the system would switch to the slower access, but higher precision HPET clock. The "tsc=reliable" kernel parameter is supposed to avoid this problem by indicating that the system has a known good clock, however, the parameter only affected run time checks. A fix has been put in to avoid the boot time checks so that the TSC remains as the clock for the duration of system runtime. (BZ#755867) 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 782642 - CVE-2012-0056 kernel: proc: /proc/<pid>/mem mem_write insufficient permission checking 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-2.6.32-220.4.1.el6.i686.rpm kernel-debug-2.6.32-220.4.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debug-devel-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm kernel-devel-2.6.32-220.4.1.el6.i686.rpm kernel-headers-2.6.32-220.4.1.el6.i686.rpm perf-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm noarch: kernel-doc-2.6.32-220.4.1.el6.noarch.rpm kernel-firmware-2.6.32-220.4.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm kernel-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-headers-2.6.32-220.4.1.el6.x86_64.rpm perf-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm python-perf-2.6.32-220.4.1.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm python-perf-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm noarch: kernel-doc-2.6.32-220.4.1.el6.noarch.rpm kernel-firmware-2.6.32-220.4.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm kernel-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-headers-2.6.32-220.4.1.el6.x86_64.rpm perf-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm python-perf-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-2.6.32-220.4.1.el6.i686.rpm kernel-debug-2.6.32-220.4.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debug-devel-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm kernel-devel-2.6.32-220.4.1.el6.i686.rpm kernel-headers-2.6.32-220.4.1.el6.i686.rpm perf-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm noarch: kernel-doc-2.6.32-220.4.1.el6.noarch.rpm kernel-firmware-2.6.32-220.4.1.el6.noarch.rpm ppc64: kernel-2.6.32-220.4.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-220.4.1.el6.ppc64.rpm kernel-debug-2.6.32-220.4.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-220.4.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-220.4.1.el6.ppc64.rpm kernel-devel-2.6.32-220.4.1.el6.ppc64.rpm kernel-headers-2.6.32-220.4.1.el6.ppc64.rpm perf-2.6.32-220.4.1.el6.ppc64.rpm perf-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm s390x: kernel-2.6.32-220.4.1.el6.s390x.rpm kernel-debug-2.6.32-220.4.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.s390x.rpm kernel-debug-devel-2.6.32-220.4.1.el6.s390x.rpm kernel-debuginfo-2.6.32-220.4.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-220.4.1.el6.s390x.rpm kernel-devel-2.6.32-220.4.1.el6.s390x.rpm kernel-headers-2.6.32-220.4.1.el6.s390x.rpm kernel-kdump-2.6.32-220.4.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-220.4.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-220.4.1.el6.s390x.rpm perf-2.6.32-220.4.1.el6.s390x.rpm perf-debuginfo-2.6.32-220.4.1.el6.s390x.rpm x86_64: kernel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm kernel-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-headers-2.6.32-220.4.1.el6.x86_64.rpm perf-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm python-perf-2.6.32-220.4.1.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-220.4.1.el6.ppc64.rpm perf-debuginfo-2.6.32-220.4.1.el6.ppc64.rpm python-perf-2.6.32-220.4.1.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-220.4.1.el6.s390x.rpm kernel-debuginfo-2.6.32-220.4.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-220.4.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-220.4.1.el6.s390x.rpm perf-debuginfo-2.6.32-220.4.1.el6.s390x.rpm python-perf-2.6.32-220.4.1.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm python-perf-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-2.6.32-220.4.1.el6.i686.rpm kernel-debug-2.6.32-220.4.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debug-devel-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm kernel-devel-2.6.32-220.4.1.el6.i686.rpm kernel-headers-2.6.32-220.4.1.el6.i686.rpm perf-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm noarch: kernel-doc-2.6.32-220.4.1.el6.noarch.rpm kernel-firmware-2.6.32-220.4.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm kernel-devel-2.6.32-220.4.1.el6.x86_64.rpm kernel-headers-2.6.32-220.4.1.el6.x86_64.rpm perf-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-220.4.1.el6.src.rpm i386: kernel-debug-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.4.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.4.1.el6.i686.rpm perf-debuginfo-2.6.32-220.4.1.el6.i686.rpm python-perf-2.6.32-220.4.1.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.4.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.4.1.el6.x86_64.rpm python-perf-2.6.32-220.4.1.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-2012-0056.html https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/kb/docs/DOC-69129 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) iD8DBQFPHcGTXlSAg2UNWIIRApQqAJ9/SpcEYh2K2lg06AunBWYR0APx6gCgsCvN f6KkbVEmaTccoUJ6Q1w4Za0= =Dfkr - -----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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