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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0406 Moderate: kernel security and bug fix update 26 April 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-3638 Reference: ESB-2012.0202 ESB-2012.0170 ESB-2012.0150 ESB-2011.1206 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-0517.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2012:0517-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0517.html Issue date: 2012-04-24 CVE Names: CVE-2011-3638 ===================================================================== 1. Summary: Updated kernel packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 5.6 Extended Update Support. The Red Hat Security Response Team has rated this update as having moderate 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 EUS (v. 5.6 server) - i386, ia64, noarch, ppc, 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 Linux kernel in the way splitting two extents in ext4_ext_convert_to_initialized() worked. A local, unprivileged user with the ability to mount and unmount ext4 file systems could use this flaw to cause a denial of service. (CVE-2011-3638, Moderate) Red Hat would like to thank Zheng Liu for reporting this issue. This update also fixes the following bug: * Starting with Red Hat Enterprise Linux 5.6, all devices that used the ixgbe driver would stop stripping VLAN tags when the device entered promiscuous mode. Placing a device in a bridge group causes the device to enter promiscuous mode. This caused various issues under certain configurations of bridging and VLANs. A patch has been provided to address this issue and the devices now properly strip VLAN tags in the driver whether in promiscuous mode or not. (BZ#809790) 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/): 747942 - CVE-2011-3638 kernel: ext4: ext4_ext_insert_extent() kernel oops 6. Package List: Red Hat Enterprise Linux EUS (v. 5.6 server): Source: kernel-2.6.18-238.37.1.el5.src.rpm i386: kernel-2.6.18-238.37.1.el5.i686.rpm kernel-PAE-2.6.18-238.37.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-238.37.1.el5.i686.rpm kernel-PAE-devel-2.6.18-238.37.1.el5.i686.rpm kernel-debug-2.6.18-238.37.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-238.37.1.el5.i686.rpm kernel-debug-devel-2.6.18-238.37.1.el5.i686.rpm kernel-debuginfo-2.6.18-238.37.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-238.37.1.el5.i686.rpm kernel-devel-2.6.18-238.37.1.el5.i686.rpm kernel-headers-2.6.18-238.37.1.el5.i386.rpm kernel-xen-2.6.18-238.37.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-238.37.1.el5.i686.rpm kernel-xen-devel-2.6.18-238.37.1.el5.i686.rpm ia64: kernel-2.6.18-238.37.1.el5.ia64.rpm kernel-debug-2.6.18-238.37.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-238.37.1.el5.ia64.rpm kernel-debug-devel-2.6.18-238.37.1.el5.ia64.rpm kernel-debuginfo-2.6.18-238.37.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-238.37.1.el5.ia64.rpm kernel-devel-2.6.18-238.37.1.el5.ia64.rpm kernel-headers-2.6.18-238.37.1.el5.ia64.rpm kernel-xen-2.6.18-238.37.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-238.37.1.el5.ia64.rpm kernel-xen-devel-2.6.18-238.37.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-238.37.1.el5.noarch.rpm ppc: kernel-2.6.18-238.37.1.el5.ppc64.rpm kernel-debug-2.6.18-238.37.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-238.37.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-238.37.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-238.37.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-238.37.1.el5.ppc64.rpm kernel-devel-2.6.18-238.37.1.el5.ppc64.rpm kernel-headers-2.6.18-238.37.1.el5.ppc.rpm kernel-headers-2.6.18-238.37.1.el5.ppc64.rpm kernel-kdump-2.6.18-238.37.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-238.37.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-238.37.1.el5.ppc64.rpm s390x: kernel-2.6.18-238.37.1.el5.s390x.rpm kernel-debug-2.6.18-238.37.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-238.37.1.el5.s390x.rpm kernel-debug-devel-2.6.18-238.37.1.el5.s390x.rpm kernel-debuginfo-2.6.18-238.37.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-238.37.1.el5.s390x.rpm kernel-devel-2.6.18-238.37.1.el5.s390x.rpm kernel-headers-2.6.18-238.37.1.el5.s390x.rpm kernel-kdump-2.6.18-238.37.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-238.37.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-238.37.1.el5.s390x.rpm x86_64: kernel-2.6.18-238.37.1.el5.x86_64.rpm kernel-debug-2.6.18-238.37.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-238.37.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-238.37.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-238.37.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-238.37.1.el5.x86_64.rpm kernel-devel-2.6.18-238.37.1.el5.x86_64.rpm kernel-headers-2.6.18-238.37.1.el5.x86_64.rpm kernel-xen-2.6.18-238.37.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-238.37.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-238.37.1.el5.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-2011-3638.html https://access.redhat.com/security/updates/classification/#moderate 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) iD8DBQFPlw8SXlSAg2UNWIIRAgl2AJ0aMbX3iOZKxi84P4UDZOS89fXWngCcDI9+ dJTMUD5d7I7lbnUtLGVnBNI= =212w - -----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 iQIVAwUBT5jYhu4yVqjM2NGpAQLDDw//f05KiHuoegdxpX2XstVh0E0lF94R8FY8 SZD4Bm0+g2ZFWtt44pp1yi7IZS3m8TaJJPjE6/XsUcLa0rawbVwyIGfpP6tH1Srx 0sO0uzUFUv7Skt2ZmnqtbRohRVEIWtdnwORa6yPX74Tg3fO69JPBGRuWLgu3WQne pCk9dXYgrhCiiDVT16kiaRzFbVfVMd5XElPvkVWDh6xGHiJchhqo16+ssFPr/q13 RoERjAXap4BYbCjwksMMbdea4xMIvgyw8nNUWlffByqjqTw9VsqOWelPSwHFMSmr aBI8/1s9lkjMToZNrW9U91eYb4WoPPAB+erAFATo8Kf9mHrf1gjBpB5gTyi4lAmA SeM0jvusSjuqPeTvxeKyxuKX+GLUwxBEO8QyuIbuIzhBKAAlsWXcpzC4NPD4lume JL88Zc2sHkfZi9uGyyH6hlY/PN66QFL9n9ynhwrY3oRLXa1Vw8wpZd3Ue3rY8ltd 3izcORckf0UyuXPM5LjhUCpXH1YcbCXvwex0aKpwJOZeJhk/GUFnyME9pAcImnh4 GwE36fGQtwbDLzkDLIbKOSpN0sx6SdofT9/aHj6MkKEaWjtYKDobyIZrpRypAMPL HnoJ25ybXQlHwC6jJ2If3cQC8n+NqFOvaU0FVfCMTbiCdNy+Q14Mn4C76sRyYeLr yIuHuhvfr6g= =zVJ3 -----END PGP SIGNATURE-----