26 May 2010
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0471 Important: kernel security and bug fix update 26 May 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2010-1188 Reference: ESB-2010.0455 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2010-0439.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-2010:0439-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0439.html Issue date: 2010-05-25 CVE Names: CVE-2010-1188 ===================================================================== 1. Summary: Updated kernel packages that fix one security issue and two bugs are now available for Red Hat Enterprise Linux 5.3 Extended Update Support. The Red Hat Security Response Team has rated this update as having important 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: Red Hat Enterprise Linux (v. 5.3.z server) - i386, ia64, noarch, ppc, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: * a use-after-free flaw was found in the tcp_rcv_state_process() function in the Linux kernel TCP/IP protocol suite implementation. If a system using IPv6 had the IPV6_RECVPKTINFO option set on a listening socket, a remote attacker could send an IPv6 packet to that system, causing a kernel panic (denial of service). (CVE-2010-1188, Important) This update also fixes the following bugs: * a memory leak occurred when reading files on an NFS file system that was mounted with the "noac" option, causing memory to slowly be consumed. Unmounting the file system did not free the memory. With this update, the memory is correctly freed, which resolves this issue. (BZ#588221) * the RHSA-2009:0225 update fixed a bug where, in some cases, on systems with the kdump service enabled, pressing Alt+SysRq+C to trigger a crash resulted in a system hang; therefore, the system did not restart and boot the dump-capture kernel as expected; no vmcore file was logged; and the following message was displayed on the console: BUG: warning at arch/[arch]/kernel/crash.c:[xxx]/nmi_shootdown_cpus() (Not tainted) The RHSA-2009:0225 update resolved this issue by not calling printk() during a crash. It was later discovered that this fix did not resolve the issue in all cases, since there was one condition where printk() was still being called: at a warning condition inside the mdelay() call. This update replaces mdelay() calls with udelay(), where such a warning condition does not exist, which fully resolves this issue, allowing Alt+SysRq+C to work as expected. (BZ#588211) Users should 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. 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 http://kbase.redhat.com/faq/docs/DOC-11259 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/): 577711 - CVE-2010-1188 kernel: ipv6: skb is unexpectedly freed 588211 - [RHEL5.3 GA] The kernel stalls before starting second kernel when pressing Alt+SysRq+c in graphical console [rhel-5.3.z] 588221 - memory leak when reading from files mounted with nfs mount option 'noac' [rhel-5.3.z] 6. Package List: Red Hat Enterprise Linux (v. 5.3.z server): Source: kernel-2.6.18-128.17.1.el5.src.rpm i386: kernel-2.6.18-128.17.1.el5.i686.rpm kernel-PAE-2.6.18-128.17.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-128.17.1.el5.i686.rpm kernel-PAE-devel-2.6.18-128.17.1.el5.i686.rpm kernel-debug-2.6.18-128.17.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-128.17.1.el5.i686.rpm kernel-debug-devel-2.6.18-128.17.1.el5.i686.rpm kernel-debuginfo-2.6.18-128.17.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-128.17.1.el5.i686.rpm kernel-devel-2.6.18-128.17.1.el5.i686.rpm kernel-headers-2.6.18-128.17.1.el5.i386.rpm kernel-xen-2.6.18-128.17.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-128.17.1.el5.i686.rpm kernel-xen-devel-2.6.18-128.17.1.el5.i686.rpm ia64: kernel-2.6.18-128.17.1.el5.ia64.rpm kernel-debug-2.6.18-128.17.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-128.17.1.el5.ia64.rpm kernel-debug-devel-2.6.18-128.17.1.el5.ia64.rpm kernel-debuginfo-2.6.18-128.17.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-128.17.1.el5.ia64.rpm kernel-devel-2.6.18-128.17.1.el5.ia64.rpm kernel-headers-2.6.18-128.17.1.el5.ia64.rpm kernel-xen-2.6.18-128.17.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-128.17.1.el5.ia64.rpm kernel-xen-devel-2.6.18-128.17.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-128.17.1.el5.noarch.rpm ppc: kernel-2.6.18-128.17.1.el5.ppc64.rpm kernel-debug-2.6.18-128.17.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-128.17.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-128.17.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-128.17.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-128.17.1.el5.ppc64.rpm kernel-devel-2.6.18-128.17.1.el5.ppc64.rpm kernel-headers-2.6.18-128.17.1.el5.ppc.rpm kernel-headers-2.6.18-128.17.1.el5.ppc64.rpm kernel-kdump-2.6.18-128.17.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-128.17.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-128.17.1.el5.ppc64.rpm s390x: kernel-2.6.18-128.17.1.el5.s390x.rpm kernel-debug-2.6.18-128.17.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-128.17.1.el5.s390x.rpm kernel-debug-devel-2.6.18-128.17.1.el5.s390x.rpm kernel-debuginfo-2.6.18-128.17.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-128.17.1.el5.s390x.rpm kernel-devel-2.6.18-128.17.1.el5.s390x.rpm kernel-headers-2.6.18-128.17.1.el5.s390x.rpm kernel-kdump-2.6.18-128.17.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-128.17.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-128.17.1.el5.s390x.rpm x86_64: kernel-2.6.18-128.17.1.el5.x86_64.rpm kernel-debug-2.6.18-128.17.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-128.17.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-128.17.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-128.17.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-128.17.1.el5.x86_64.rpm kernel-devel-2.6.18-128.17.1.el5.x86_64.rpm kernel-headers-2.6.18-128.17.1.el5.x86_64.rpm kernel-xen-2.6.18-128.17.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-128.17.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-128.17.1.el5.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://www.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2010-1188.html http://www.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <firstname.lastname@example.org>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFL+/VqXlSAg2UNWIIRAi1eAKCPkipRuh1h8MWA+H8iBvY9nJHXygCeOw9M JzCXowQgCxQ9JyvPcDV1ejo= =W8Ik - -----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 email@example.com 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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. 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 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org 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 iD8DBQFL/F2q/iFOrG6YcBERAi7PAJ4veISbAO3neNXGOKVzotpW7aOjvwCgnvSJ N4ImnaRqTFEQiHadk9WeSVQ= =ytlK -----END PGP SIGNATURE-----