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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0904 Moderate: kernel-rt security, bug fix, and enhancement update 20 September 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Linux variants Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-4398 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1282.html Comment: This advisory references vulnerabilities in the Linux kernel that also affect distributions other than Red Hat. It is recommended that administrators running Linux check for an updated version of the kernel for their system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security, bug fix, and enhancement update Advisory ID: RHSA-2012:1282-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1282.html Issue date: 2012-09-19 CVE Names: CVE-2012-4398 ===================================================================== 1. Summary: Updated kernel-rt packages that fix one security issue, several bugs, and add enhancements are now available for Red Hat Enterprise MRG 2.2. 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: MRG Realtime for RHEL 6 Server v.2 - 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 issue: * It was found that a deadlock could occur in the Out of Memory (OOM) killer. A process could trigger this deadlock by consuming a large amount of memory, and then causing request_module() to be called. A local, unprivileged user could use this flaw to cause a denial of service (excessive memory consumption). (CVE-2012-4398, Moderate) Red Hat would like to thank Tetsuo Handa for reporting this issue. The kernel-rt packages have been upgraded to upstream version 3.2, which provides a number of bug fixes and enhancements over the previous version. (BZ#798421) This update also fixes various bugs and adds enhancements. Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section. Users should upgrade to these updated kernel-rt packages, which correct this issue, fix these bugs, and add these enhancements. 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/): 725799 - diskless support for MRG 2.x 786083 - iptables unable to log to rsyslog 798421 - Rebase MRG RT kernel to 3.2-rtX series 798423 - InfiniBand stack refresh in MRG RT 799385 - Thread can dead lock in migrate timers 799386 - The futex proxy handler grabs the pi_lock without disabling interrupts 799389 - lglocks can be taken and never released on cpu offline and onlining 799391 - Tasks waiting on a state change of another task may get wrong result 799399 - ftrace_dump() can cause issues on RT 814689 - missing /proc/sys/crypto/fips_enabled in 3.2.14-rt24.22.el6rt.x86_64 causes openssh errors 815937 - 3.0.25-rt44.57.el6rt.x86_64 missing firmware rtl_nic/rtl8168e-2.fw 825344 - new mrg-rt-release sub-package [mrg2.2] 834583 - kernel-rt-3.2.20-rt32.44.el6rt.x86_64 floods the console with "DMAR [fault reason 02] Present bit in context entry is clear" 842680 - kernel 3.2.23-rt37.49.el6rt.x86_64 doesn't create symlinks to /lib/firmware/mrg-rt-firmware 853474 - CVE-2012-4398 kernel: request_module() OOM local DoS 6. Package List: MRG Realtime for RHEL 6 Server v.2: Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/RHEMRG-RHEL6/SRPMS/kernel-rt-3.2.23-rt37.56.el6rt.src.rpm ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/RHEMRG-RHEL6/SRPMS/rt-firmware-1.0-3.el6_3.src.rpm noarch: kernel-rt-doc-3.2.23-rt37.56.el6rt.noarch.rpm kernel-rt-firmware-3.2.23-rt37.56.el6rt.noarch.rpm mrg-rt-release-3.2.23-rt37.56.el6rt.noarch.rpm rt-firmware-1.0-3.el6_3.noarch.rpm x86_64: kernel-rt-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-debug-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-debug-devel-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-debuginfo-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-devel-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-trace-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-trace-devel-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-vanilla-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.2.23-rt37.56.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.2.23-rt37.56.el6rt.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-2012-4398.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_MRG/2/html/Technical_Notes/sec-Red_Hat_Enterprise_Linux_6.html#RHSA-2012-1282 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) iD8DBQFQWguSXlSAg2UNWIIRAtvyAJ9NqjXmJUosNb16Zh3WuO7C+q5c9wCgjL9g jiW2xcBSkQ6Wue5ODcsauTE= =S4+I - -----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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUFqcn+4yVqjM2NGpAQJd6A/9FgLLXQzKsORDt+lu+r7QqCccrOg+EM4G S0xSnvcU7Fj/6mtwPPJHkOqBS415ixQejiFDiqOb9V3QL86F2dOPWMuUy5E19TwK 1/su0kmGXMeP3CCdObD5UoBd34H16DvSdcY54bza6PXY76OXVJ2galDZjYWSMYAY MtyicC1eCuOgrbiCgaBSZIorcnmYflhRZp4Ymje1wtarvdSnfAk8g8pxPyO2Zkfv 8kTGuikRhYdp6BIAy7NI/2APVMWsrazj/j9AW4BaPN2N7azmRAc1u+GH4ApUj8LP a32xAJXX0D3gCUSoryCizxYzTfHw4bAkkgvqqgOwgeFFv4csiDtyMF+godp6a7XY lT8geuU5FfZfPkB/fMrVjzAiKWQ2uX8rfpfm1I6iJgK2Q31A6RBRQsxYsSEaK4la sjs3tuhfnE6+FQz5R8hmSRnn8dte1Y4eCDnJq9rHm1E46GcF6wGgIc4dvHDB7zEt pbfh720KbGHMQEOdGQb8RTDJdeAO2fWgRAuekPI2+GVm9NgfzsP4anz7MlMM/DnR U5OQsMh/RO3SwBzvust0T6pyvbuF0IoVMNzFkyT0pdi0MzqW2lk+EE0GcnnTEA0E 461wPhynajGU0Vg/0YAsVcykDKxMD12ZrN+Id6KIBaVL2KnBpXRq+CbXe7cwtjcP P+P0XsD+zS4= =KESq -----END PGP SIGNATURE-----