-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2013:1450-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1450.html Issue date: 2013-10-22 CVE Names: CVE-2013-2224 CVE-2013-2852 CVE-2013-4299 ===================================================================== 1. Summary: Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 6.3 Extended Update Support. The Red Hat Security Response Team 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 Compute Node EUS (v. 6.3) - noarch, x86_64 Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.3) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.3) - i386, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. * It was found that the fix for CVE-2012-3552 released via RHSA-2012:1540 introduced an invalid free flaw in the Linux kernel's TCP/IP protocol suite implementation. A local, unprivileged user could use this flaw to corrupt kernel memory via crafted sendmsg() calls, allowing them to cause a denial of service or, potentially, escalate their privileges on the system. (CVE-2013-2224, Important) * An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) * A format string flaw was found in the b43_do_request_fw() function in the Linux kernel's b43 driver implementation. A local user who is able to specify the "fwpostfix" b43 module parameter could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-2852, Low) Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, and Kees Cook for reporting CVE-2013-2852. This update also fixes the following bugs: * An insufficiently designed calculation in the CPU accelerator could cause an arithmetic overflow in the set_cyc2ns_scale() function if the system uptime exceeded 208 days prior to using kexec to boot into a new kernel. This overflow led to a kernel panic on the systems using the Time Stamp Counter (TSC) clock source, primarily the systems using Intel Xeon E5 processors that do not reset TSC on soft power cycles. A patch has been applied to modify the calculation so that this arithmetic overflow and kernel panic can no longer occur under these circumstances. (BZ#1004185) * A race condition in the abort task and SPP device task management path of the isci driver could, under certain circumstances, cause the driver to fail cleaning up timed-out I/O requests that were pending on an SAS disk device. As a consequence, the kernel removed such a device from the system. A patch applied to the isci driver fixes this problem by sending the task management function request to the SAS drive anytime the abort function is entered and the task has not completed. The driver now cleans up timed-out I/O requests as expected in this situation. (BZ#1007467) * A kernel panic could occur during path failover on systems using multiple iSCSI, FC or SRP paths to connect an iSCSI initiator and an iSCSI target. This happened because a race condition in the SCSI driver allowed removing a SCSI device from the system before processing its run queue, which led to a NULL pointer dereference. The SCSI driver has been modified and the race is now avoided by holding a reference to a SCSI device run queue while it is active. (BZ#1008507) 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. 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/site/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/): 969518 - CVE-2013-2852 kernel: b43: format string leaking into error msgs 979936 - CVE-2013-2224 kernel: net: IP_REPOPTS invalid free 1004233 - CVE-2013-4299 kernel: dm: dm-snapshot data leak 6. Package List: Red Hat Enterprise Linux Compute Node EUS (v. 6.3): Source: kernel-2.6.32-279.37.2.el6.src.rpm noarch: kernel-doc-2.6.32-279.37.2.el6.noarch.rpm kernel-firmware-2.6.32-279.37.2.el6.noarch.rpm x86_64: kernel-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.37.2.el6.x86_64.rpm kernel-devel-2.6.32-279.37.2.el6.x86_64.rpm kernel-headers-2.6.32-279.37.2.el6.x86_64.rpm perf-2.6.32-279.37.2.el6.x86_64.rpm perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) : Source: kernel-2.6.32-279.37.2.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.37.2.el6.x86_64.rpm perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm python-perf-2.6.32-279.37.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.3): Source: kernel-2.6.32-279.37.2.el6.src.rpm i386: kernel-2.6.32-279.37.2.el6.i686.rpm kernel-debug-2.6.32-279.37.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-279.37.2.el6.i686.rpm kernel-debug-devel-2.6.32-279.37.2.el6.i686.rpm kernel-debuginfo-2.6.32-279.37.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-279.37.2.el6.i686.rpm kernel-devel-2.6.32-279.37.2.el6.i686.rpm kernel-headers-2.6.32-279.37.2.el6.i686.rpm perf-2.6.32-279.37.2.el6.i686.rpm perf-debuginfo-2.6.32-279.37.2.el6.i686.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.i686.rpm noarch: kernel-doc-2.6.32-279.37.2.el6.noarch.rpm kernel-firmware-2.6.32-279.37.2.el6.noarch.rpm ppc64: kernel-2.6.32-279.37.2.el6.ppc64.rpm kernel-bootwrapper-2.6.32-279.37.2.el6.ppc64.rpm kernel-debug-2.6.32-279.37.2.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm kernel-debug-devel-2.6.32-279.37.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-279.37.2.el6.ppc64.rpm kernel-devel-2.6.32-279.37.2.el6.ppc64.rpm kernel-headers-2.6.32-279.37.2.el6.ppc64.rpm perf-2.6.32-279.37.2.el6.ppc64.rpm perf-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm s390x: kernel-2.6.32-279.37.2.el6.s390x.rpm kernel-debug-2.6.32-279.37.2.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-279.37.2.el6.s390x.rpm kernel-debug-devel-2.6.32-279.37.2.el6.s390x.rpm kernel-debuginfo-2.6.32-279.37.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-279.37.2.el6.s390x.rpm kernel-devel-2.6.32-279.37.2.el6.s390x.rpm kernel-headers-2.6.32-279.37.2.el6.s390x.rpm kernel-kdump-2.6.32-279.37.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-279.37.2.el6.s390x.rpm kernel-kdump-devel-2.6.32-279.37.2.el6.s390x.rpm perf-2.6.32-279.37.2.el6.s390x.rpm perf-debuginfo-2.6.32-279.37.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.s390x.rpm x86_64: kernel-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.37.2.el6.x86_64.rpm kernel-devel-2.6.32-279.37.2.el6.x86_64.rpm kernel-headers-2.6.32-279.37.2.el6.x86_64.rpm perf-2.6.32-279.37.2.el6.x86_64.rpm perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.3): Source: kernel-2.6.32-279.37.2.el6.src.rpm i386: kernel-debug-debuginfo-2.6.32-279.37.2.el6.i686.rpm kernel-debuginfo-2.6.32-279.37.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-279.37.2.el6.i686.rpm perf-debuginfo-2.6.32-279.37.2.el6.i686.rpm python-perf-2.6.32-279.37.2.el6.i686.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-279.37.2.el6.ppc64.rpm perf-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm python-perf-2.6.32-279.37.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-279.37.2.el6.s390x.rpm kernel-debuginfo-2.6.32-279.37.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-279.37.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-279.37.2.el6.s390x.rpm perf-debuginfo-2.6.32-279.37.2.el6.s390x.rpm python-perf-2.6.32-279.37.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-279.37.2.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.37.2.el6.x86_64.rpm perf-debuginfo-2.6.32-279.37.2.el6.x86_64.rpm python-perf-2.6.32-279.37.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.37.2.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/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2013-2224.html https://www.redhat.com/security/data/cve/CVE-2013-2852.html https://www.redhat.com/security/data/cve/CVE-2013-4299.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2013 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFSZrlrXlSAg2UNWIIRAs0GAKCFMseO7vV8bC8+xOLvyYYFyBEDogCgw/NT mJr9jzxDPWpAb+zZOXi8SZk= =e6kg -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce