-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2013:1264-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1264.html Issue date: 2013-09-16 CVE Names: CVE-2013-2058 CVE-2013-2141 CVE-2013-2146 CVE-2013-2147 CVE-2013-2148 CVE-2013-2164 CVE-2013-2232 CVE-2013-2234 CVE-2013-2237 CVE-2013-2850 CVE-2013-2851 CVE-2013-2852 CVE-2013-3301 CVE-2013-4162 CVE-2013-4163 ===================================================================== 1. Summary: Updated kernel-rt packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise MRG 2.3. 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: 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. This update fixes the following security issues: * A heap-based buffer overflow flaw was found in the Linux kernel's iSCSI target subsystem. A remote attacker could use a specially-crafted iSCSI request to cause a denial of service on a system or, potentially, escalate their privileges on that system. (CVE-2013-2850, Important) * A flaw was found in the Linux kernel's Performance Events implementation. On systems with certain Intel processors, a local, unprivileged user could use this flaw to cause a denial of service by leveraging the perf subsystem to write into the reserved bits of the OFFCORE_RSP_0 and OFFCORE_RSP_1 model-specific registers. (CVE-2013-2146, Moderate) * An invalid pointer dereference flaw was found in the Linux kernel's TCP/IP protocol suite implementation. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system by using sendmsg() with an IPv6 socket connected to an IPv4 destination. (CVE-2013-2232, Moderate) * Two flaws were found in the way the Linux kernel's TCP/IP protocol suite implementation handled IPv6 sockets that used the UDP_CORK option. A local, unprivileged user could use these flaws to cause a denial of service. (CVE-2013-4162, CVE-2013-4163, Moderate) * A flaw was found in the Linux kernel's Chipidea USB driver. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2013-2058, Low) * Information leak flaws in the Linux kernel could allow a privileged, local user to leak kernel memory to user-space. (CVE-2013-2147, CVE-2013-2164, CVE-2013-2234, CVE-2013-2237, Low) * Information leak flaws in the Linux kernel could allow a local, unprivileged user to leak kernel memory to user-space. (CVE-2013-2141, CVE-2013-2148, Low) * A format string flaw was found in the Linux kernel's block layer. A privileged, local user could potentially use this flaw to escalate their privileges to kernel level (ring0). (CVE-2013-2851, Low) * 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) * A NULL pointer dereference flaw was found in the Linux kernel's ftrace and function tracer implementations. A local user who has the CAP_SYS_ADMIN capability could use this flaw to cause a denial of service. (CVE-2013-3301, Low) Red Hat would like to thank Kees Cook for reporting CVE-2013-2850, CVE-2013-2851, and CVE-2013-2852; and Hannes Frederic Sowa for reporting CVE-2013-4162 and CVE-2013-4163. This update also fixes the following bugs: * The following drivers have been updated, fixing a number of bugs: myri10ge, bna, enic, mlx4, bgmac, bcma, cxgb3, cxgb4, qlcnic, r8169, be2net, e100, e1000, e1000e, igb, ixgbe, brcm80211, cpsw, pch_gbe, bfin_mac, bnx2x, bnx2, cnic, tg3, and sfc. (BZ#974138) * The realtime kernel was not built with the CONFIG_NET_DROP_WATCH kernel configuration option enabled. As such, attempting to run the dropwatch command resulted in the following error: Unable to find NET_DM family, dropwatch can't work Cleaning up on socket creation error With this update, the realtime kernel is built with the CONFIG_NET_DROP_WATCH option, allowing dropwatch to work as expected. (BZ#979417) Users should upgrade to these updated packages, which upgrade the kernel-rt kernel to version kernel-rt-3.6.11.5-rt37, 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/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/): 952197 - CVE-2013-3301 Kernel: tracing: NULL pointer dereference 959210 - CVE-2013-2058 Kernel: usb: chipidea: Allow disabling streaming not just in udc mode 968036 - CVE-2013-2850 kernel: iscsi-target: heap buffer overflow on large key error 969515 - CVE-2013-2851 kernel: block: passing disk names as format strings 969518 - CVE-2013-2852 kernel: b43: format string leaking into error msgs 970873 - CVE-2013-2141 Kernel: signal: information leak in tkill/tgkill 971242 - CVE-2013-2147 Kernel: cpqarray/cciss: information leak via ioctl 971258 - CVE-2013-2148 Kernel: fanotify: info leak in copy_event_to_user 971309 - CVE-2013-2146 Kernel: perf/x86: offcore_rsp valid mask for SNB/IVB 973100 - CVE-2013-2164 Kernel: information leak in cdrom driver 974138 - MRG 2.3 kernel drivers update 980995 - CVE-2013-2234 Kernel: net: information leak in AF_KEY notify 981220 - CVE-2013-2237 Kernel: net: af_key: initialize satype in key_notify_policy_flush 981552 - CVE-2013-2232 Kernel: ipv6: using ipv4 vs ipv6 structure during routing lookup in sendmsg 983603 - update RT specfile references of version.h to vermagic.h 987627 - CVE-2013-4162 Kernel: net: panic while pushing pending data out of a IPv6 socket with UDP_CORK enabled 987633 - CVE-2013-4163 Kernel: net: panic while appending data to a corked IPv6 socket in ip6_append_data_mtu 6. Package List: MRG Realtime for RHEL 6 Server v.2: Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/RHEMRG-RHEL6/SRPMS/kernel-rt-3.6.11.5-rt37.55.el6rt.src.rpm noarch: kernel-rt-doc-3.6.11.5-rt37.55.el6rt.noarch.rpm kernel-rt-firmware-3.6.11.5-rt37.55.el6rt.noarch.rpm mrg-rt-release-3.6.11.5-rt37.55.el6rt.noarch.rpm x86_64: kernel-rt-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-debug-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-debug-devel-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-debuginfo-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-devel-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-trace-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-trace-devel-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-vanilla-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.6.11.5-rt37.55.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.6.11.5-rt37.55.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-2013-2058.html https://www.redhat.com/security/data/cve/CVE-2013-2141.html https://www.redhat.com/security/data/cve/CVE-2013-2146.html https://www.redhat.com/security/data/cve/CVE-2013-2147.html https://www.redhat.com/security/data/cve/CVE-2013-2148.html https://www.redhat.com/security/data/cve/CVE-2013-2164.html https://www.redhat.com/security/data/cve/CVE-2013-2232.html https://www.redhat.com/security/data/cve/CVE-2013-2234.html https://www.redhat.com/security/data/cve/CVE-2013-2237.html https://www.redhat.com/security/data/cve/CVE-2013-2850.html https://www.redhat.com/security/data/cve/CVE-2013-2851.html https://www.redhat.com/security/data/cve/CVE-2013-2852.html https://www.redhat.com/security/data/cve/CVE-2013-3301.html https://www.redhat.com/security/data/cve/CVE-2013-4162.html https://www.redhat.com/security/data/cve/CVE-2013-4163.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) iD8DBQFSNzpBXlSAg2UNWIIRArFLAJsHqV97c2DqHCkhsX3pjxpgYd/D/QCfQIUk OhWpIPoF8EMEQxliWpz60bw= =JJc7 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce