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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1100 Important: kernel security and bug fix update 22 April 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Root Compromise -- Remote/Unauthenticated Access Privileged Data -- Console/Physical Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-1421 CVE-2014-9584 CVE-2014-9529 CVE-2014-8884 CVE-2014-8171 CVE-2014-7826 CVE-2014-7825 CVE-2014-3690 CVE-2014-3215 Reference: ESB-2015.0870 ESB-2015.0799 ESB-2015.0750 ESB-2015.0503 ESB-2015.0429 ESB-2015.0137 ESB-2015.0108 ESB-2014.2322 ESB-2014.2275 ESB-2014.2016 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-0864.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2015:0864-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0864.html Issue date: 2015-04-21 CVE Names: CVE-2014-3215 CVE-2014-3690 CVE-2014-7825 CVE-2014-7826 CVE-2014-8171 CVE-2014-8884 CVE-2014-9529 CVE-2014-9584 CVE-2015-1421 ===================================================================== 1. Summary: Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. 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: Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way seunshare, a utility for running executables under a different security context, used the capng_lock functionality of the libcap-ng library. The subsequent invocation of suid root binaries that relied on the fact that the setuid() system call, among others, also sets the saved set-user-ID when dropping the binaries' process privileges, could allow a local, unprivileged user to potentially escalate their privileges on the system. Note: the fix for this issue is the kernel part of the overall fix, and introduces the PR_SET_NO_NEW_PRIVS functionality and the related SELinux exec transitions support. (CVE-2014-3215, Important) * A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important) * It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2014-3690, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. (CVE-2014-7825, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges. (CVE-2014-7826, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory-constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found in the way the Linux kernel keys management subsystem performed key garbage collection. A local attacker could attempt accessing a key while it was being garbage collected, which would cause the system to crash. (CVE-2014-9529, Moderate) * A stack-based buffer overflow flaw was found in the TechnoTrend/Hauppauge DEC USB device driver. A local user with write access to the corresponding device could use this flaw to crash the kernel or, potentially, elevate their privileges on the system. (CVE-2014-8884, Low) * An information leak flaw was found in the way the Linux kernel's ISO9660 file system implementation accessed data on an ISO9660 image with RockRidge Extension Reference (ER) records. An attacker with physical access to the system could use this flaw to disclose up to 255 bytes of kernel memory. (CVE-2014-9584, Low) Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-3215 and CVE-2014-3690, Robert Å\x{154}wiÄ\x{153}cki for reporting CVE-2014-7825 and CVE-2014-7826, and Carl Henrik Lunde for reporting CVE-2014-9584. The CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat. This update also fixes several bugs. Documentation for these changes is available from the Technical Notes document linked to in the References section. All kernel users are advised to 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. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1095855 - CVE-2014-3215 policycoreutils: local privilege escalation via seunshare 1153322 - CVE-2014-3690 kernel: kvm: vmx: invalid host cr4 handling across vm entries 1161565 - CVE-2014-7825 CVE-2014-7826 kernel: insufficient syscall number validation in perf and ftrace subsystems 1164266 - CVE-2014-8884 kernel: usb: buffer overflow in ttusb-dec 1179813 - CVE-2014-9529 kernel: memory corruption or panic during key garbage collection 1180119 - CVE-2014-9584 kernel: isofs: unchecked printing of ER records 1196581 - CVE-2015-1421 kernel: net: slab corruption from use after free on INIT collisions 1198109 - CVE-2014-8171 kernel: memcg: OOM handling DoS 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: kernel-2.6.32-504.16.2.el6.src.rpm i386: kernel-2.6.32-504.16.2.el6.i686.rpm kernel-debug-2.6.32-504.16.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debug-devel-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm kernel-devel-2.6.32-504.16.2.el6.i686.rpm kernel-headers-2.6.32-504.16.2.el6.i686.rpm perf-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.16.2.el6.noarch.rpm kernel-doc-2.6.32-504.16.2.el6.noarch.rpm kernel-firmware-2.6.32-504.16.2.el6.noarch.rpm x86_64: kernel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm kernel-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-headers-2.6.32-504.16.2.el6.x86_64.rpm perf-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-504.16.2.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-504.16.2.el6.noarch.rpm kernel-doc-2.6.32-504.16.2.el6.noarch.rpm kernel-firmware-2.6.32-504.16.2.el6.noarch.rpm x86_64: kernel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm kernel-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-headers-2.6.32-504.16.2.el6.x86_64.rpm perf-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-504.16.2.el6.src.rpm i386: kernel-2.6.32-504.16.2.el6.i686.rpm kernel-debug-2.6.32-504.16.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debug-devel-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm kernel-devel-2.6.32-504.16.2.el6.i686.rpm kernel-headers-2.6.32-504.16.2.el6.i686.rpm perf-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.16.2.el6.noarch.rpm kernel-doc-2.6.32-504.16.2.el6.noarch.rpm kernel-firmware-2.6.32-504.16.2.el6.noarch.rpm ppc64: kernel-2.6.32-504.16.2.el6.ppc64.rpm kernel-bootwrapper-2.6.32-504.16.2.el6.ppc64.rpm kernel-debug-2.6.32-504.16.2.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm kernel-debug-devel-2.6.32-504.16.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.16.2.el6.ppc64.rpm kernel-devel-2.6.32-504.16.2.el6.ppc64.rpm kernel-headers-2.6.32-504.16.2.el6.ppc64.rpm perf-2.6.32-504.16.2.el6.ppc64.rpm perf-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm s390x: kernel-2.6.32-504.16.2.el6.s390x.rpm kernel-debug-2.6.32-504.16.2.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.s390x.rpm kernel-debug-devel-2.6.32-504.16.2.el6.s390x.rpm kernel-debuginfo-2.6.32-504.16.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.16.2.el6.s390x.rpm kernel-devel-2.6.32-504.16.2.el6.s390x.rpm kernel-headers-2.6.32-504.16.2.el6.s390x.rpm kernel-kdump-2.6.32-504.16.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.16.2.el6.s390x.rpm kernel-kdump-devel-2.6.32-504.16.2.el6.s390x.rpm perf-2.6.32-504.16.2.el6.s390x.rpm perf-debuginfo-2.6.32-504.16.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.s390x.rpm x86_64: kernel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm kernel-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-headers-2.6.32-504.16.2.el6.x86_64.rpm perf-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.16.2.el6.ppc64.rpm perf-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm python-perf-2.6.32-504.16.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-504.16.2.el6.s390x.rpm kernel-debuginfo-2.6.32-504.16.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.16.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.16.2.el6.s390x.rpm perf-debuginfo-2.6.32-504.16.2.el6.s390x.rpm python-perf-2.6.32-504.16.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-504.16.2.el6.src.rpm i386: kernel-2.6.32-504.16.2.el6.i686.rpm kernel-debug-2.6.32-504.16.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debug-devel-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm kernel-devel-2.6.32-504.16.2.el6.i686.rpm kernel-headers-2.6.32-504.16.2.el6.i686.rpm perf-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.16.2.el6.noarch.rpm kernel-doc-2.6.32-504.16.2.el6.noarch.rpm kernel-firmware-2.6.32-504.16.2.el6.noarch.rpm x86_64: kernel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm kernel-devel-2.6.32-504.16.2.el6.x86_64.rpm kernel-headers-2.6.32-504.16.2.el6.x86_64.rpm perf-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-2.6.32-504.16.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.16.2.el6.i686.rpm perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm python-perf-2.6.32-504.16.2.el6.i686.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.16.2.el6.x86_64.rpm perf-debuginfo-2.6.32-504.16.2.el6.x86_64.rpm python-perf-2.6.32-504.16.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.16.2.el6.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/ 7. References: https://access.redhat.com/security/cve/CVE-2014-3215 https://access.redhat.com/security/cve/CVE-2014-3690 https://access.redhat.com/security/cve/CVE-2014-7825 https://access.redhat.com/security/cve/CVE-2014-7826 https://access.redhat.com/security/cve/CVE-2014-8171 https://access.redhat.com/security/cve/CVE-2014-8884 https://access.redhat.com/security/cve/CVE-2014-9529 https://access.redhat.com/security/cve/CVE-2014-9584 https://access.redhat.com/security/cve/CVE-2015-1421 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.6_Technical_Notes/kernel.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVNmbUXlSAg2UNWIIRAnIwAJ0aFQPpfUnASsmFvvmzTl6UNrCJEACfbF2l w8l2g/j31KalKIZpwmqdOO0= =z9/0 - -----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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