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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.1425 Important: kernel-rt security and bug fix update 21 August 2014 =========================================================================== 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 -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2014-5077 CVE-2014-4656 CVE-2014-4655 CVE-2014-4654 CVE-2014-4653 CVE-2014-4652 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2014-1083.html Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running kernel-rt check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2014:1083-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1083.html Issue date: 2014-08-20 CVE Names: CVE-2014-4652 CVE-2014-4653 CVE-2014-4654 CVE-2014-4655 CVE-2014-4656 CVE-2014-5077 ===================================================================== 1. Summary: Updated kernel-rt packages that fix multiple security issues and one bug are now available for Red Hat Enterprise MRG 2.5. 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: 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. * A NULL pointer dereference flaw was found in the way the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation handled simultaneous connections between the same hosts. A remote attacker could use this flaw to crash the system. (CVE-2014-5077, Important) * Multiple use-after-free flaws and an integer overflow flaw were found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled user controls. A local, privileged user could use either of these flaws to crash the system. (CVE-2014-4653, CVE-2014-4654, CVE-2014-4655, CVE-2014-4656, Moderate) * An information leak flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled access of the user control's state. A local, privileged user could use this flaw to leak kernel memory to user space. (CVE-2014-4652, Low) This update also fixes the following bug: * Prior to this update, the netconsole module was unavailable on MRG Realtime kernels due to locking issues that disabled it. These locking issues have been corrected, allowing the netconsole module to be re-enabled and functional on Realtime kernels. (BZ#1088923) Users are advised to upgrade to these updated packages, which upgrade the kernel-rt kernel to version kernel-rt-3.10.33-rt32.45 and 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/): 1113406 - CVE-2014-4652 Kernel: ALSA: control: protect user controls against races & memory disclosure 1113409 - CVE-2014-4653 Kernel: ALSA: control: do not access controls outside of protected regions 1113445 - CVE-2014-4654 CVE-2014-4655 Kernel: ALSA: control: use-after-free in replacing user controls 1113470 - CVE-2014-4656 Kernel: ALSA: control: integer overflow in id.index & id.numid 1122982 - CVE-2014-5077 Kernel: net: SCTP: fix a NULL pointer dereference during INIT collisions 6. Package List: MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.33-rt32.45.el6rt.src.rpm noarch: kernel-rt-doc-3.10.33-rt32.45.el6rt.noarch.rpm kernel-rt-firmware-3.10.33-rt32.45.el6rt.noarch.rpm x86_64: kernel-rt-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-debug-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-devel-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-trace-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.33-rt32.45.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-2014-4652.html https://www.redhat.com/security/data/cve/CVE-2014-4653.html https://www.redhat.com/security/data/cve/CVE-2014-4654.html https://www.redhat.com/security/data/cve/CVE-2014-4655.html https://www.redhat.com/security/data/cve/CVE-2014-4656.html https://www.redhat.com/security/data/cve/CVE-2014-5077.html 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 2014 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFT9ISHXlSAg2UNWIIRAnhFAJ9WQ1j06qdQP4Idb69OrcSV5eZqVQCdFzSH 86VmT65bjJyMVq+O0OkZyro= =KKrt - -----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. 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