RHSA-2011:0004 - Security Advisory

Topic

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

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.

Description

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

This update fixes the following security issues:

• A flaw was found in sctp_packet_config() in the Linux kernel's Stream

Control Transmission Protocol (SCTP) implementation. A remote attacker
could use this flaw to cause a denial of service. (CVE-2010-3432,
Important)

• A missing integer overflow check was found in snd_ctl_new() in the Linux

kernel's sound subsystem. A local, unprivileged user on a 32-bit system
could use this flaw to cause a denial of service or escalate their
privileges. (CVE-2010-3442, Important)

• A heap overflow flaw in the Linux kernel's Transparent Inter-Process

Communication protocol (TIPC) implementation could allow a local,
unprivileged user to escalate their privileges. (CVE-2010-3859, Important)

• An integer overflow flaw was found in the Linux kernel's Reliable

Datagram Sockets (RDS) protocol implementation. A local, unprivileged user
could use this flaw to cause a denial of service or escalate their
privileges. (CVE-2010-3865, Important)

• A flaw was found in the Xenbus code for the unified block-device I/O

interface back end. A privileged guest user could use this flaw to cause a
denial of service on the host system running the Xen hypervisor.
(CVE-2010-3699, Moderate)

• Missing sanity checks were found in setup_arg_pages() in the Linux

kernel. When making the size of the argument and environment area on the
stack very large, it could trigger a BUG_ON(), resulting in a local denial
of service. (CVE-2010-3858, Moderate)

• A flaw was found in inet_csk_diag_dump() in the Linux kernel's module for

monitoring the sockets of INET transport protocols. By sending a netlink
message with certain bytecode, a local, unprivileged user could cause a
denial of service. (CVE-2010-3880, Moderate)

• Missing sanity checks were found in gdth_ioctl_alloc() in the gdth driver

in the Linux kernel. A local user with access to "/dev/gdth" on a 64-bit
system could use this flaw to cause a denial of service or escalate their
privileges. (CVE-2010-4157, Moderate)

• The fix for Red Hat Bugzilla bug 484590 as provided in RHSA-2009:1243

introduced a regression. A local, unprivileged user could use this flaw to
cause a denial of service. (CVE-2010-4161, Moderate)

• A NULL pointer dereference flaw was found in the Bluetooth HCI UART

driver in the Linux kernel. A local, unprivileged user could use this flaw
to cause a denial of service. (CVE-2010-4242, Moderate)

• It was found that a malicious guest running on the Xen hypervisor could

place invalid data in the memory that the guest shared with the blkback and
blktap back-end drivers, resulting in a denial of service on the host
system. (CVE-2010-4247, Moderate)

• A flaw was found in the Linux kernel's CPU time clocks implementation for

the POSIX clock interface. A local, unprivileged user could use this flaw
to cause a denial of service. (CVE-2010-4248, Moderate)

• Missing initialization flaws in the Linux kernel could lead to

information leaks. (CVE-2010-3876, CVE-2010-4083, Low)

Red Hat would like to thank Dan Rosenberg for reporting CVE-2010-3442,
CVE-2010-4161, and CVE-2010-4083; Thomas Pollet for reporting
CVE-2010-3865; Brad Spengler for reporting CVE-2010-3858; Nelson Elhage for
reporting CVE-2010-3880; Alan Cox for reporting CVE-2010-4242; and Vasiliy
Kulikov for reporting CVE-2010-3876.

This update also fixes several bugs and adds an enhancement. Documentation
for the bug fixes and the enhancement 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, and fix the bugs and add the enhancement
noted in the Technical Notes. The system must be rebooted for this update
to take effect.

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.

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 636411 - CVE-2010-3699 kernel: guest->host denial of service from invalid xenbus transitions
• BZ - 637675 - CVE-2010-3432 kernel: sctp: do not reset the packet during sctp_packet_config
• BZ - 638478 - CVE-2010-3442 kernel: prevent heap corruption in snd_ctl_new()
• BZ - 641410 - CVE-2010-4242 kernel: missing tty ops write function presence check in hci_uart_tty_open()
• BZ - 643339 - [Intel/Cisco 5.6 Bug] ixgbe: include ability to disable MSI-X [rhel-5.5.z]
• BZ - 643344 - kernel: Problem with execve(2) reintroduced [rhel-5.5.z]
• BZ - 643345 - netback does not properly get to the Connected state after it's been Closed [rhel-5.5.z]
• BZ - 643347 - kernel: security: testing the wrong variable in create_by_name() [rhel-5.5.z]
• BZ - 645222 - CVE-2010-3858 kernel: setup_arg_pages: diagnose excessive argument size
• BZ - 645867 - CVE-2010-3859 kernel: tipc: heap overflow in tipc_msg_build()
• BZ - 646765 - RHEL5.6 Include DL580 G7 in bfsort whitelist [rhel-5.5.z]
• BZ - 647416 - CVE-2010-3865 kernel: iovec integer overflow in net/rds/rdma.c
• BZ - 647681 - bond0 only works in promisc mode [rhel-5.5.z]
• BZ - 648673 - CVE-2010-4083 kernel: ipc/sem.c: reading uninitialized stack memory
• BZ - 648938 - x86_64 host on Nehalem-EX machines will panic when installing a 4.8 GA kvm guest [rhel-5.5.z]
• BZ - 649255 - bnx2 adapter periodically dropping received packets [rhel-5.5.z]
• BZ - 649715 - CVE-2010-3876 kernel: net/packet/af_packet.c: reading uninitialized stack memory
• BZ - 651147 - CVE-2010-4157 kernel: gdth: integer overflow in ioc_general()
• BZ - 651264 - CVE-2010-3880 kernel: logic error in INET_DIAG bytecode auditing
• BZ - 651805 - GFS2: stuck in inode wait, no glocks stuck [rhel-5.5.z]
• BZ - 651811 - GFS2: BUG_ON kernel panic in gfs2_glock_hold on 2.6.18-226 [rhel-5.5.z]
• BZ - 651818 - [5.5] Hangs up during booting due to a spinlock problem. [rhel-5.5.z]
• BZ - 652534 - CVE-2010-4161 kernel: rhel5 commit 6865201191 caused deadlock
• BZ - 652561 - Scheduling while atomic when removing slave tg3 interface from bonding [rhel-5.5.z]
• BZ - 653335 - flock performance with DLM in RHEL 5.5 [rhel-5.5.z]
• BZ - 656206 - CVE-2010-4247 xen: request-processing loop is unbounded in blkback
• BZ - 656264 - CVE-2010-4248 kernel: posix-cpu-timers: workaround to suppress the problems with mt exec
• BZ - 657028 - [NetApp 5.6 bug] SCSI ALUA handler fails to handle ALUA transitioning properly [rhel-5.5.z]
• BZ - 657029 - [NetApp 5.6 bug] qla2xxx: Kernel panic on qla24xx_queuecommand [rhel-5.5.z]
• BZ - 657319 - [Stratus 5.6 bug] System crashes at uhci_scan_schedule(). [rhel-5.5.z]
• BZ - 658079 - lpfc: set heartbeat timer off by default [rhel-5.5.z]
• BZ - 658378 - lpfc: fix a BUG_ON in lpfc_abort_handler [rhel-5.5.z]
• BZ - 658379 - lpfc: fix panic in lpfc_scsi_cmd_iocb_cmpl [rhel-5.5.z]
• BZ - 658520 - add round_jiffies_up and related routines [rhel-5.5.z]
• BZ - 658857 - dcache unused accounting problem [rhel-5.5.z]
• BZ - 658864 - lpfc: fix crashes on NULL pnode dereference [rhel-5.5.z]
• BZ - 658934 - [NetApp 5.6 bug] regression: allow offlined devs to be set to running [rhel-5.5.z]
• BZ - 663353 - System crashes at .nfs_flush_incompatible [rhel-5.5.z]
• BZ - 663381 - [REG][5.6] kernel panic occurs by writing a file on optional mount "sync/noac" of NFSv4. [rhel-5.5.z]
• BZ - 664416 - [REG][5.6] kernel panic occurs by reading an empty file on optional mount "sync/noac" of NFSv4. [rhel-5.5.z]

CVEs

• CVE-2010-3432
• CVE-2010-3442
• CVE-2010-4083
• CVE-2010-3880
• CVE-2010-3876
• CVE-2010-4157
• CVE-2010-3858
• CVE-2010-4161
• CVE-2010-3865
• CVE-2010-3699
• CVE-2010-4247
• CVE-2010-4242
• CVE-2010-3859
• CVE-2010-4248

References

• https://access.redhat.com/security/updates/classification/#important
• http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.5_Technical_Notes/kernel.html#RHSA-2011-0004