15 October 2010
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0934 Moderate: kernel-rt security and bug fix update 15 October 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Impact/Access: Denial of Service -- Existing Account Access Confidential Data -- Existing Account Read-only Data Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2010-3297 CVE-2010-2955 CVE-2010-2942 CVE-2010-0307 Reference: ESB-2010.0877 ESB-2010.0420 ESB-2010.0253 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2010-0771.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2010:0771-01 Product: Red Hat Enterprise MRG for RHEL-5 Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0771.html Issue date: 2010-10-14 CVE Names: CVE-2010-0307 CVE-2010-2942 CVE-2010-2955 CVE-2010-3297 ===================================================================== 1. Summary: Updated kernel-rt packages that fix multiple security issues and upgrade the kernel-rt kernel to version 126.96.36.199-rt29 are now available for Red Hat Enterprise MRG 1.3. The Red Hat Security Response Team has rated this update as having moderate 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: MRG Realtime for RHEL 5 Server - i386, noarch, x86_64 3. Description: The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * On AMD64 systems, it was discovered that the kernel did not ensure the ELF interpreter was available before making a call to the SET_PERSONALITY macro. A local attacker could use this flaw to cause a denial of service by running a 32-bit application that attempts to execute a 64-bit application. (CVE-2010-0307, Moderate) * Information leak flaws were found in the Linux kernel Traffic Control Unit implementation. A local attacker could use these flaws to cause the kernel to leak kernel memory to user-space, possibly leading to the disclosure of sensitive information. (CVE-2010-2942, Moderate) * It was found that wireless drivers might not always clear allocated buffers when handling a driver-specific IOCTL information request. A local user could trigger this flaw to cause kernel memory to leak from the heap to user-space, leading to an information leak. (CVE-2010-2955, Moderate) * A flaw was found in the eql_g_master_cfg() function in the Linux kernel equalizer load-balancer for serial network interfaces implementation. A data structure in eql_g_master_cfg() was not initialized properly before being copied to user-space. A local, unprivileged user could use this flaw to cause an information leak. (CVE-2010-3297, Moderate) Red Hat would like to thank Mathias Krause for reporting CVE-2010-0307, and Dan Rosenberg for reporting CVE-2010-3297. This update also fixes the following bugs: * The mkinitrd utility reported the following warning message when creating an initial ramdisk: No module dm-mem-cache found for kernel [version], aborting. This was caused by an erroneous dependency on dmraid-related modules. This update removes these dependencies with the result that mkinitrd does not issue a spurious warning about the dm-mem-cache module not being found. (BZ#482753) * The ibm_rtl kernel module now performs more exhaustive checking to ensure it only loads on correct IBM hardware. (BZ#612275) * The realtime Linux kernel has been upgraded to upstream version 188.8.131.52-rt29, which provides a number of bug fixes and enhancements for Red Hat Enterprise MRG 1.3. (BZ#638672) Users should upgrade to these updated packages, which upgrade the kernel-rt kernel to version 184.108.40.206-rt29 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 http://kbase.redhat.com/faq/docs/DOC-11259 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/): 482753 - mkinitrd erroneously inserts dependencies to dm-mem-cache (not present on MRG) 560547 - CVE-2010-0307 kernel: DoS on x86_64 612275 - WARNING: at arch/x86/mm/ioremap.c:148 __ioremap_caller+0x160/0x30e() 624903 - CVE-2010-2942 kernel: net sched: fix some kernel memory leaks 628434 - CVE-2010-2955 kernel: wireless: fix 64K kernel heap content leak via ioctl 633145 - CVE-2010-3297 kernel: drivers/net/eql.c: reading uninitialized stack memory 638672 - Need to move the MRG RT source base to upstream RT (2.6.33) 6. Package List: MRG Realtime for RHEL 5 Server: Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG/SRPMS/kernel-rt-220.127.116.11-rt29.45.el5rt.src.rpm i386: kernel-rt-18.104.22.168-rt29.45.el5rt.i686.rpm kernel-rt-debug-22.214.171.124-rt29.45.el5rt.i686.rpm kernel-rt-debug-debuginfo-126.96.36.199-rt29.45.el5rt.i686.rpm kernel-rt-debug-devel-188.8.131.52-rt29.45.el5rt.i686.rpm kernel-rt-debuginfo-184.108.40.206-rt29.45.el5rt.i686.rpm kernel-rt-debuginfo-common-220.127.116.11-rt29.45.el5rt.i686.rpm kernel-rt-devel-18.104.22.168-rt29.45.el5rt.i686.rpm kernel-rt-trace-22.214.171.124-rt29.45.el5rt.i686.rpm kernel-rt-trace-debuginfo-126.96.36.199-rt29.45.el5rt.i686.rpm kernel-rt-trace-devel-188.8.131.52-rt29.45.el5rt.i686.rpm kernel-rt-vanilla-184.108.40.206-rt29.45.el5rt.i686.rpm kernel-rt-vanilla-debuginfo-220.127.116.11-rt29.45.el5rt.i686.rpm kernel-rt-vanilla-devel-18.104.22.168-rt29.45.el5rt.i686.rpm perf-22.214.171.124-rt29.45.el5rt.i686.rpm perf-debuginfo-126.96.36.199-rt29.45.el5rt.i686.rpm noarch: kernel-rt-doc-188.8.131.52-rt29.45.el5rt.noarch.rpm x86_64: kernel-rt-184.108.40.206-rt29.45.el5rt.x86_64.rpm kernel-rt-debug-220.127.116.11-rt29.45.el5rt.x86_64.rpm kernel-rt-debug-debuginfo-18.104.22.168-rt29.45.el5rt.x86_64.rpm kernel-rt-debug-devel-22.214.171.124-rt29.45.el5rt.x86_64.rpm kernel-rt-debuginfo-126.96.36.199-rt29.45.el5rt.x86_64.rpm kernel-rt-debuginfo-common-188.8.131.52-rt29.45.el5rt.x86_64.rpm kernel-rt-devel-184.108.40.206-rt29.45.el5rt.x86_64.rpm kernel-rt-trace-220.127.116.11-rt29.45.el5rt.x86_64.rpm kernel-rt-trace-debuginfo-18.104.22.168-rt29.45.el5rt.x86_64.rpm kernel-rt-trace-devel-22.214.171.124-rt29.45.el5rt.x86_64.rpm kernel-rt-vanilla-126.96.36.199-rt29.45.el5rt.x86_64.rpm kernel-rt-vanilla-debuginfo-188.8.131.52-rt29.45.el5rt.x86_64.rpm kernel-rt-vanilla-devel-184.108.40.206-rt29.45.el5rt.x86_64.rpm perf-220.127.116.11-rt29.45.el5rt.x86_64.rpm perf-debuginfo-18.104.22.168-rt29.45.el5rt.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://www.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2010-0307.html https://www.redhat.com/security/data/cve/CVE-2010-2942.html https://www.redhat.com/security/data/cve/CVE-2010-2955.html https://www.redhat.com/security/data/cve/CVE-2010-3297.html http://www.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <email@example.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFMtyY1XlSAg2UNWIIRAnPuAJ9D7y9FA2DNluu+aaPZgOPbg2hE1QCfULTI S+kkGSMbPa3nTYxNvFVFEI8= =h2XV - -----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. 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: email@example.com 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 iD8DBQFMt69s/iFOrG6YcBERAr9QAJ967B9yvAB542eFTyhRLJNry7LzrgCfVn/+ tGo7hKg9s2e5dUkzY9axtJs= =5y3Y -----END PGP SIGNATURE-----