6.2 - RHSA-2010:0839

Problem Description:

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team 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 (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues:

* A NULL pointer dereference flaw was found in the io_submit_one() function in the Linux kernel asynchronous I/O implementation. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2010-3066, Moderate)

* A flaw was found in the xfs_ioc_fsgetxattr() function in the Linux kernel XFS file system implementation. A data structure in xfs_ioc_fsgetxattr() was not initialized properly before being copied to user-space. A local, unprivileged user could use this flaw to cause an information leak. (CVE-2010-3078, Moderate)

* The exception fixup code for the __futex_atomic_op1, __futex_atomic_op2, and futex_atomic_cmpxchg_inatomic() macros replaced the LOCK prefix with a NOP instruction. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2010-3086, Moderate)

* A flaw was found in the tcf_act_police_dump() function in the Linux kernel network traffic policing implementation. A data structure in tcf_act_police_dump() was not initialized properly before being copied to user-space. A local, unprivileged user could use this flaw to cause an information leak. (CVE-2010-3477, Moderate)

* A missing upper bound integer check was found in the sys_io_submit() function in the Linux kernel asynchronous I/O implementation. A local, unprivileged user could use this flaw to cause an information leak. (CVE-2010-3067, Low)

Red Hat would like to thank Tavis Ormandy for reporting CVE-2010-3066, CVE-2010-3086, and CVE-2010-3067, and Dan Rosenberg for reporting CVE-2010-3078.

This update also fixes several bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References section.

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/):

619365 - [LSI 5.6 feat] update megaraid_sas to version 4.31 [rhel-5.5.z] 628889 - [NetApp 5.6 bug] RHEL NFS clients disconnected from NetApp NFSv4 shares with: v4 server returned a bad sequence-id error! [rhel-5.5.z] 629241 - kernel: thinkpad-acpi: lock down video output state access [rhel-5.5.z] 629441 - CVE-2010-3067 kernel: do_io_submit() infoleak 629861 - Reserve PNP enumerated system board iomem resources [rhel-5.5.z] 630540 - [RHEL5.5] soft lockup on vlan with bonding in balance-alb mode [rhel-5.5.z] 630804 - CVE-2010-3078 kernel: xfs: XFS_IOC_FSGETXATTR ioctl memory leak 630989 - HVM guest w/ UP and PV driver hangs after live migration or suspend/resume [rhel-5.5.z] 631716 - CVE-2010-3066 kernel: io_submit_one() NULL ptr deref 632255 - RHEVH - Vdsm - Storage: lvextend fails during VMs intensive power up [rhel-5.5.z] 633170 - CVE-2010-3086 kernel panic via futex 634976 - icmpmsg_put() in kernel writes beyond array bounds, leading to junk in /proc/net/snmp and memory corruption [rhel-5.5.z] 634977 - Spinning up disk for device on standby path causing long boot up [rhel-5.5.z] 636386 - CVE-2010-3477 kernel: net/sched/act_police.c infoleak 637069 - time drift with VXTIME_PMTMR mode in case of early / short real ticks [rhel-5.5.z] 637206 - system crashes due to corrupt net_device_wrapper structure [rhel-5.5.z] 637220 - [RHEL5 IA64 XEN] netfront driver: alloc_dev: Private data too big. [rhel-5.5.z] 637727 - lpfc ioctl crash in lpfc_nlp_put() [rhel-5.5.z] 638579 - dasd: fix race between tasklet and dasd_sleep_on [rhel-5.5.z] 638866 - [5.5] a race in pid generation that causes pids to be reused immediately. [rhel-5.5.z] 639073 - GFS1 vs GFS2 performance issue [rhel-5.5.z] 640973 - Bonded interface doesn't issue IGMP report (join) on slave interface during failover [rhel-5.5.z] 641915 - backward time drift in RHEL4, 5, and 6 Xen HVM guests that use PM timer / bug in hypervisor routine pmt_update_time() [rhel-5.5.z] 642465 - CVE-2010-2963 kernel: v4l: VIDIOCSMICROCODE arbitrary write 642470 - CVE-2010-2963 kernel: v4l: VIDIOCSMICROCODE arbitrary write [rhel-5.5.z] 642628 - [5.6 FEAT] NFSv4 remove does not wait for close. Silly rename [rhel-5.5.z] 643135 - [NetApp/QLogic 5.5.z bug] Kernel panic hit on RHEL 5.5 QLogic FC host at qla2x00_abort_fcport_cmds [rhel-5.5.z] 643571 - [EMC 5.6 bug] severe fragmentation with xfs file system [rhel-5.5.z] 643806 - Add OFED-1.5.2 patch to increase log_mtts_per_seg for 5.5z-stream [rhel-5.5.z] 644822 - 802.3ad link aggregation won't work with newer (2.6.194-8.1.el5) kernel and ixgbe driver [rhel-5.5.z] 647601 - Direct IO write to a file on an nfs mount does not work [rhel-5.5.z]