-----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 . 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----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce