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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1865 Moderate: kernel security, bug fix, and enhancement update 15 July 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 -- Existing Account Denial of Service -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-3636 CVE-2015-2922 CVE-2015-2830 CVE-2015-1593 CVE-2011-5321 Reference: ESB-2015.1628 ESB-2015.1627 ESB-2015.1626 ESB-2015.1592 ESB-2015.1137 ESB-2015.0429 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-1221.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2015:1221-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1221.html Issue date: 2015-07-14 CVE Names: CVE-2011-5321 CVE-2015-1593 CVE-2015-2830 CVE-2015-2922 CVE-2015-3636 ===================================================================== 1. Summary: Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 6. Red Hat Product Security 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: 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 NULL pointer dereference flaw was found in the way the Linux kernel's virtual console implementation handled reference counting when accessing pseudo-terminal device files (/dev/pts/*). A local, unprivileged attacker could use this flaw to crash the system. (CVE-2011-5321, Moderate) * It was found that the Linux kernel's ping socket implementation did not properly handle socket unhashing during spurious disconnects, which could lead to a use-after-free flaw. On x86-64 architecture systems, a local user able to create ping sockets could use this flaw to crash the system. On non-x86-64 architecture systems, a local user able to create ping sockets could use this flaw to escalate their privileges on the system. (CVE-2015-3636, Moderate) * An integer overflow flaw was found in the way the Linux kernel randomized the stack for processes on certain 64-bit architecture systems, such as x86-64, causing the stack entropy to be reduced by four. (CVE-2015-1593, Low) * A flaw was found in the way the Linux kernel's 32-bit emulation implementation handled forking or closing of a task with an 'int80' entry. A local user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-2830, Low) * It was found that the Linux kernel's TCP/IP protocol suite implementation for IPv6 allowed the Hop Limit value to be set to a smaller value than the default one. An attacker on a local network could use this flaw to prevent systems on that network from sending or receiving network packets. (CVE-2015-2922, Low) These updated kernel packages also include numerous bug fixes and one enhancement. Space precludes documenting all of these changes in this advisory. For information on the most significant of these changes, users are directed to the following article on the Red Hat Customer Portal: https://access.redhat.com/articles/1506133 All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add this enhancement. 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/): 1192519 - CVE-2015-1593 kernel: Linux stack ASLR implementation Integer overflow 1201887 - CVE-2011-5321 Kernel: tty: driver reference leakage in tty_open 1203712 - CVE-2015-2922 kernel: denial of service (DoS) attack against IPv6 network stacks due to improper handling of Router Advertisements. 1208598 - CVE-2015-2830 kernel: int80 fork from 64-bit tasks mishandling 1218074 - CVE-2015-3636 kernel: ping sockets: use-after-free leading to local privilege escalation 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: kernel-2.6.32-504.30.3.el6.src.rpm i386: kernel-2.6.32-504.30.3.el6.i686.rpm kernel-debug-2.6.32-504.30.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debug-devel-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm kernel-devel-2.6.32-504.30.3.el6.i686.rpm kernel-headers-2.6.32-504.30.3.el6.i686.rpm perf-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.30.3.el6.noarch.rpm kernel-doc-2.6.32-504.30.3.el6.noarch.rpm kernel-firmware-2.6.32-504.30.3.el6.noarch.rpm x86_64: kernel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm kernel-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-headers-2.6.32-504.30.3.el6.x86_64.rpm perf-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-504.30.3.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-504.30.3.el6.noarch.rpm kernel-doc-2.6.32-504.30.3.el6.noarch.rpm kernel-firmware-2.6.32-504.30.3.el6.noarch.rpm x86_64: kernel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm kernel-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-headers-2.6.32-504.30.3.el6.x86_64.rpm perf-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-504.30.3.el6.src.rpm i386: kernel-2.6.32-504.30.3.el6.i686.rpm kernel-debug-2.6.32-504.30.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debug-devel-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm kernel-devel-2.6.32-504.30.3.el6.i686.rpm kernel-headers-2.6.32-504.30.3.el6.i686.rpm perf-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.30.3.el6.noarch.rpm kernel-doc-2.6.32-504.30.3.el6.noarch.rpm kernel-firmware-2.6.32-504.30.3.el6.noarch.rpm ppc64: kernel-2.6.32-504.30.3.el6.ppc64.rpm kernel-bootwrapper-2.6.32-504.30.3.el6.ppc64.rpm kernel-debug-2.6.32-504.30.3.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm kernel-debug-devel-2.6.32-504.30.3.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.30.3.el6.ppc64.rpm kernel-devel-2.6.32-504.30.3.el6.ppc64.rpm kernel-headers-2.6.32-504.30.3.el6.ppc64.rpm perf-2.6.32-504.30.3.el6.ppc64.rpm perf-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm s390x: kernel-2.6.32-504.30.3.el6.s390x.rpm kernel-debug-2.6.32-504.30.3.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.s390x.rpm kernel-debug-devel-2.6.32-504.30.3.el6.s390x.rpm kernel-debuginfo-2.6.32-504.30.3.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.30.3.el6.s390x.rpm kernel-devel-2.6.32-504.30.3.el6.s390x.rpm kernel-headers-2.6.32-504.30.3.el6.s390x.rpm kernel-kdump-2.6.32-504.30.3.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.30.3.el6.s390x.rpm kernel-kdump-devel-2.6.32-504.30.3.el6.s390x.rpm perf-2.6.32-504.30.3.el6.s390x.rpm perf-debuginfo-2.6.32-504.30.3.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.s390x.rpm x86_64: kernel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm kernel-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-headers-2.6.32-504.30.3.el6.x86_64.rpm perf-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.30.3.el6.ppc64.rpm perf-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm python-perf-2.6.32-504.30.3.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-504.30.3.el6.s390x.rpm kernel-debuginfo-2.6.32-504.30.3.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.30.3.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.30.3.el6.s390x.rpm perf-debuginfo-2.6.32-504.30.3.el6.s390x.rpm python-perf-2.6.32-504.30.3.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-504.30.3.el6.src.rpm i386: kernel-2.6.32-504.30.3.el6.i686.rpm kernel-debug-2.6.32-504.30.3.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debug-devel-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm kernel-devel-2.6.32-504.30.3.el6.i686.rpm kernel-headers-2.6.32-504.30.3.el6.i686.rpm perf-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-504.30.3.el6.noarch.rpm kernel-doc-2.6.32-504.30.3.el6.noarch.rpm kernel-firmware-2.6.32-504.30.3.el6.noarch.rpm x86_64: kernel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm kernel-devel-2.6.32-504.30.3.el6.x86_64.rpm kernel-headers-2.6.32-504.30.3.el6.x86_64.rpm perf-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-2.6.32-504.30.3.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.30.3.el6.i686.rpm perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm python-perf-2.6.32-504.30.3.el6.i686.rpm python-perf-debuginfo-2.6.32-504.30.3.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.30.3.el6.x86_64.rpm perf-debuginfo-2.6.32-504.30.3.el6.x86_64.rpm python-perf-2.6.32-504.30.3.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.30.3.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-2011-5321 https://access.redhat.com/security/cve/CVE-2015-1593 https://access.redhat.com/security/cve/CVE-2015-2830 https://access.redhat.com/security/cve/CVE-2015-2922 https://access.redhat.com/security/cve/CVE-2015-3636 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/articles/1506133 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 iD8DBQFVpSlZXlSAg2UNWIIRAiH6AJ0f+4MsyH6Y0JvQ7hYGYeDCc5xQ9gCgq2xn pASawK+hDHii812IfMoudgU= =kEoA - -----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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