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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0093 Important: kernel security and bug fix update 14 January 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-3688 CVE-2014-3687 CVE-2014-3673 Reference: ESB-2014.2412.2 ESB-2014.2403 ESB-2014.2341 ESB-2014.2016 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-0043.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2015:0043-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0043.html Issue date: 2015-01-13 CVE Names: CVE-2014-3673 CVE-2014-3687 CVE-2014-3688 ===================================================================== 1. Summary: Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 6.4 Extended Update Support. Red Hat Product Security 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 Compute Node Optional EUS (v. 6.4) - x86_64 Red Hat Enterprise Linux HPC Node EUS (v. 6.4) - noarch, x86_64 Red Hat Enterprise Linux Server EUS (v. 6.4) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.4) - i386, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's SCTP implementation handled malformed or duplicate Address Configuration Change Chunks (ASCONF). A remote attacker could use either of these flaws to crash the system. (CVE-2014-3673, CVE-2014-3687, Important) * A flaw was found in the way the Linux kernel's SCTP implementation handled the association's output queue. A remote attacker could send specially crafted packets that would cause the system to use an excessive amount of memory, leading to a denial of service. (CVE-2014-3688, Important) The CVE-2014-3673 issue was discovered by Liu Wei of Red Hat. This update also fixes the following bugs: * When the Baseboard Management Controller (BMC) was reset, the settings for the ipmi_watchdog driver were not restored correctly causing error 80 to be returned. With this update, Intelligent Platform Management Interface (IPMI) is reset as expected in the described situation, and the error is no longer returned. (BZ#1109268) * Under certain conditions, XFS log flushes could exceed the kernel thread stack size. As a consequence, a kernel panic occurred on systems using XFS file systems. This update provides a patch that moves this code path to a work queue, and therefore the stack overflow no longer occurs. (BZ#1154086) * Due to a race condition, an attempt to unmount an XFS file system using the umount command could fail, causing the system to become unresponsive. The underlying source code has been modified to fix this bug, and the system no longer hangs in the described situation. (BZ#1158320) * Previously, the printk_ratelimited() function printed messages which were supposed to be suppressed, and failed to print messages that were supposed to be printed. This was caused by the incorrect usage of the __ratelimit() function. This bug has been fixed with this update, and now printk_ratelimit() behaves as expected. (BZ#1169401) All kernel users are advised to 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/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 (https://bugzilla.redhat.com/): 1147850 - CVE-2014-3673 kernel: sctp: skb_over_panic when receiving malformed ASCONF chunks 1155731 - CVE-2014-3687 kernel: net: sctp: fix panic on duplicate ASCONF chunks 1155745 - CVE-2014-3688 kernel: net: sctp: remote memory pressure from excessive queueing 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.4): Source: kernel-2.6.32-358.55.1.el6.src.rpm noarch: kernel-doc-2.6.32-358.55.1.el6.noarch.rpm kernel-firmware-2.6.32-358.55.1.el6.noarch.rpm x86_64: kernel-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.55.1.el6.x86_64.rpm kernel-devel-2.6.32-358.55.1.el6.x86_64.rpm kernel-headers-2.6.32-358.55.1.el6.x86_64.rpm perf-2.6.32-358.55.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.4): Source: kernel-2.6.32-358.55.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.55.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm python-perf-2.6.32-358.55.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.4): Source: kernel-2.6.32-358.55.1.el6.src.rpm i386: kernel-2.6.32-358.55.1.el6.i686.rpm kernel-debug-2.6.32-358.55.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-358.55.1.el6.i686.rpm kernel-debug-devel-2.6.32-358.55.1.el6.i686.rpm kernel-debuginfo-2.6.32-358.55.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-358.55.1.el6.i686.rpm kernel-devel-2.6.32-358.55.1.el6.i686.rpm kernel-headers-2.6.32-358.55.1.el6.i686.rpm perf-2.6.32-358.55.1.el6.i686.rpm perf-debuginfo-2.6.32-358.55.1.el6.i686.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.i686.rpm noarch: kernel-doc-2.6.32-358.55.1.el6.noarch.rpm kernel-firmware-2.6.32-358.55.1.el6.noarch.rpm ppc64: kernel-2.6.32-358.55.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-358.55.1.el6.ppc64.rpm kernel-debug-2.6.32-358.55.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-358.55.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-358.55.1.el6.ppc64.rpm kernel-devel-2.6.32-358.55.1.el6.ppc64.rpm kernel-headers-2.6.32-358.55.1.el6.ppc64.rpm perf-2.6.32-358.55.1.el6.ppc64.rpm perf-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm s390x: kernel-2.6.32-358.55.1.el6.s390x.rpm kernel-debug-2.6.32-358.55.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-358.55.1.el6.s390x.rpm kernel-debug-devel-2.6.32-358.55.1.el6.s390x.rpm kernel-debuginfo-2.6.32-358.55.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-358.55.1.el6.s390x.rpm kernel-devel-2.6.32-358.55.1.el6.s390x.rpm kernel-headers-2.6.32-358.55.1.el6.s390x.rpm kernel-kdump-2.6.32-358.55.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-358.55.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-358.55.1.el6.s390x.rpm perf-2.6.32-358.55.1.el6.s390x.rpm perf-debuginfo-2.6.32-358.55.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.s390x.rpm x86_64: kernel-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.55.1.el6.x86_64.rpm kernel-devel-2.6.32-358.55.1.el6.x86_64.rpm kernel-headers-2.6.32-358.55.1.el6.x86_64.rpm perf-2.6.32-358.55.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.4): Source: kernel-2.6.32-358.55.1.el6.src.rpm i386: kernel-debug-debuginfo-2.6.32-358.55.1.el6.i686.rpm kernel-debuginfo-2.6.32-358.55.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-358.55.1.el6.i686.rpm perf-debuginfo-2.6.32-358.55.1.el6.i686.rpm python-perf-2.6.32-358.55.1.el6.i686.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-358.55.1.el6.ppc64.rpm perf-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm python-perf-2.6.32-358.55.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-358.55.1.el6.s390x.rpm kernel-debuginfo-2.6.32-358.55.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-358.55.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-358.55.1.el6.s390x.rpm perf-debuginfo-2.6.32-358.55.1.el6.s390x.rpm python-perf-2.6.32-358.55.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-358.55.1.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.55.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.55.1.el6.x86_64.rpm python-perf-2.6.32-358.55.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.55.1.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-2014-3673 https://access.redhat.com/security/cve/CVE-2014-3687 https://access.redhat.com/security/cve/CVE-2014-3688 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 2015 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFUtaJZXlSAg2UNWIIRAhJ/AJ4utDSqSwd2RbPdAqdS2OTGKBcy7ACgvbLY k6SUc9WfzS7ZPvt+/N4Jv/Q= =3sG+ - -----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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