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Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2010:0958-01
Product: Red Hat Enterprise MRG for RHEL-5
Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0958.html
Issue date: 2010-12-08
CVE Names: CVE-2010-2962 CVE-2010-3432 CVE-2010-3442
CVE-2010-3705 CVE-2010-3858 CVE-2010-3861
CVE-2010-3874 CVE-2010-3876 CVE-2010-3880
CVE-2010-4072 CVE-2010-4073 CVE-2010-4074
CVE-2010-4075 CVE-2010-4077 CVE-2010-4079
CVE-2010-4080 CVE-2010-4082 CVE-2010-4083
CVE-2010-4157 CVE-2010-4158 CVE-2010-4169
=====================================================================
1. Summary:
Updated kernel-rt packages that fix multiple security issues and three bugs
are now available for Red Hat Enterprise MRG 1.3.
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 5 Server - i386, noarch, x86_64
3. Description:
The kernel-rt packages contain the Linux kernel, the core of any Linux
operating system.
Security fixes:
* Missing sanity checks in the Intel i915 driver in the Linux kernel could
allow a local, unprivileged user to escalate their privileges.
(CVE-2010-2962, Important)
* A flaw in sctp_packet_config() in the Linux kernel's Stream Control
Transmission Protocol (SCTP) implementation could allow a remote attacker
to cause a denial of service. (CVE-2010-3432, Important)
* A missing integer overflow check in snd_ctl_new() in the Linux kernel's
sound subsystem could allow a local, unprivileged user on a 32-bit system
to cause a denial of service or escalate their privileges. (CVE-2010-3442,
Important)
* A flaw in sctp_auth_asoc_get_hmac() in the Linux kernel's SCTP
implementation. When iterating through the hmac_ids array, it did not reset
the last id element if it was out of range. This could allow a remote
attacker to cause a denial of service. (CVE-2010-3705, Important)
* Missing sanity checks 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 in ethtool_get_rxnfc() in the Linux kernel's ethtool IOCTL
handler. When it is called with a large info.rule_cnt, it could allow a
local user to cause an information leak. (CVE-2010-3861, Moderate)
* A flaw in bcm_connect() in the Linux kernel's Controller Area Network
(CAN) Broadcast Manager. On 64-bit systems, writing the socket address may
overflow the procname character array. (CVE-2010-3874, Moderate)
* A flaw 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 in gdth_ioctl_alloc() in the gdth driver in the
Linux kernel, could allow a local user with access to "/dev/gdth" on a
64-bit system to cause a denial of service or escalate their privileges.
(CVE-2010-4157, Moderate)
* A use-after-free flaw in the mprotect() system call could allow a local,
unprivileged user to cause a local denial of service. (CVE-2010-4169,
Moderate)
* Missing initialization flaws in the Linux kernel could lead to
information leaks. (CVE-2010-3876, CVE-2010-4072, CVE-2010-4073,
CVE-2010-4074, CVE-2010-4075, CVE-2010-4077, CVE-2010-4079, CVE-2010-4080,
CVE-2010-4082, CVE-2010-4083, CVE-2010-4158, Low)
Red Hat would like to thank Kees Cook for reporting CVE-2010-2962,
CVE-2010-3861, and CVE-2010-4072; Dan Rosenberg for reporting
CVE-2010-3442, CVE-2010-3705, CVE-2010-3874, CVE-2010-4073, CVE-2010-4074,
CVE-2010-4075, CVE-2010-4077, CVE-2010-4079, CVE-2010-4080, CVE-2010-4082,
CVE-2010-4083, and CVE-2010-4158; Brad Spengler for reporting
CVE-2010-3858; Nelson Elhage for reporting CVE-2010-3880; and Vasiliy
Kulikov for reporting CVE-2010-3876.
Bug fixes:
* A vulnerability in the 32-bit compatibility code for the VIDIOCSMICROCODE
IOCTL in the Video4Linux implementation. It does not affect Red Hat
Enterprise MRG, but as a preventive measure, this update removes the code.
Red Hat would like to thank Kees Cook for reporting this vulnerability.
(BZ#642469)
* The kernel-rt spec file was missing the crypto, drm, generated, and trace
header directories when generating the kernel-rt-devel package, resulting
in out-of-tree modules failing to build. (BZ#608784)
* On computers without a supported Performance Monitoring Unit, a crash
would occur when running the "perf top" command, and occasionally other
perf commands. perf software events are now marked as IRQ safe to avoid
this crash. (BZ#647434)
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/):
608784 - cannot build third-party modules based upon 2.6.33.5-rt* packages
637675 - CVE-2010-3432 kernel: sctp: do not reset the packet during
sctp_packet_config
637688 - CVE-2010-2962 kernel: arbitrary kernel memory write via i915 GEM ioctl
638478 - CVE-2010-3442 kernel: prevent heap corruption in snd_ctl_new()
640036 - CVE-2010-3705 kernel: sctp memory corruption in HMAC handling
642469 - CVE-2010-2963 kernel: v4l: VIDIOCSMICROCODE arbitrary write [mrg-1.3]
645222 - CVE-2010-3858 kernel: setup_arg_pages: diagnose excessive argument
size
646725 - CVE-2010-3861 kernel: heap contents leak from ETHTOOL_GRXCLSRLALL
647434 - perf: Mark software events as irqsafe
648656 - CVE-2010-4072 kernel: ipc/shm.c: reading uninitialized stack memory
648658 - CVE-2010-4073 kernel: ipc/compat*.c: reading uninitialized stack
memory
648659 - CVE-2010-4074 kernel: drivers/usb/serial/mos*.c: reading uninitialized
stack memory
648660 - CVE-2010-4075 kernel: drivers/serial/serial_core.c: reading
uninitialized stack memory
648663 - CVE-2010-4077 kernel: drivers/char/nozomi.c: reading uninitialized
stack memory
648666 - CVE-2010-4079 kernel: drivers/video/ivtv/ivtvfb.c: reading
uninitialized stack memory
648669 - CVE-2010-4080 kernel: drivers/sound/pci/rme9652/hdsp.c: reading
uninitialized stack memory
648671 - CVE-2010-4082 kernel: drivers/video/via/ioctl.c: reading uninitialized
stack memory
648673 - CVE-2010-4083 kernel: ipc/sem.c: reading uninitialized stack memory
649695 - CVE-2010-3874 kernel: CAN info leak/minor heap overflow
649715 - CVE-2010-3876 kernel: net/packet/af_packet.c: reading uninitialized
stack memory
651147 - CVE-2010-4157 kernel: gdth: integer overflow in ioc_general()
651264 - CVE-2010-3880 kernel: logic error in INET_DIAG bytecode auditing
651671 - CVE-2010-4169 kernel: perf bug
651698 - CVE-2010-4158 kernel: socket filters infoleak
6. Package List:
MRG Realtime for RHEL 5 Server:
Source:
kernel-rt-2.6.33.7-rt29.47.el5rt.src.rpm
i386:
kernel-rt-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-debug-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-debug-debuginfo-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-debug-devel-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-debuginfo-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-debuginfo-common-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-devel-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-trace-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-trace-debuginfo-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-trace-devel-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-vanilla-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-vanilla-debuginfo-2.6.33.7-rt29.47.el5rt.i686.rpm
kernel-rt-vanilla-devel-2.6.33.7-rt29.47.el5rt.i686.rpm
perf-2.6.33.7-rt29.47.el5rt.i686.rpm
perf-debuginfo-2.6.33.7-rt29.47.el5rt.i686.rpm
noarch:
kernel-rt-doc-2.6.33.7-rt29.47.el5rt.noarch.rpm
x86_64:
kernel-rt-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-debug-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-debug-debuginfo-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-debug-devel-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-debuginfo-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-debuginfo-common-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-devel-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-trace-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-trace-debuginfo-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-trace-devel-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-vanilla-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-vanilla-debuginfo-2.6.33.7-rt29.47.el5rt.x86_64.rpm
kernel-rt-vanilla-devel-2.6.33.7-rt29.47.el5rt.x86_64.rpm
perf-2.6.33.7-rt29.47.el5rt.x86_64.rpm
perf-debuginfo-2.6.33.7-rt29.47.el5rt.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-2010-2962.html
https://www.redhat.com/security/data/cve/CVE-2010-3432.html
https://www.redhat.com/security/data/cve/CVE-2010-3442.html
https://www.redhat.com/security/data/cve/CVE-2010-3705.html
https://www.redhat.com/security/data/cve/CVE-2010-3858.html
https://www.redhat.com/security/data/cve/CVE-2010-3861.html
https://www.redhat.com/security/data/cve/CVE-2010-3874.html
https://www.redhat.com/security/data/cve/CVE-2010-3876.html
https://www.redhat.com/security/data/cve/CVE-2010-3880.html
https://www.redhat.com/security/data/cve/CVE-2010-4072.html
https://www.redhat.com/security/data/cve/CVE-2010-4073.html
https://www.redhat.com/security/data/cve/CVE-2010-4074.html
https://www.redhat.com/security/data/cve/CVE-2010-4075.html
https://www.redhat.com/security/data/cve/CVE-2010-4077.html
https://www.redhat.com/security/data/cve/CVE-2010-4079.html
https://www.redhat.com/security/data/cve/CVE-2010-4080.html
https://www.redhat.com/security/data/cve/CVE-2010-4082.html
https://www.redhat.com/security/data/cve/CVE-2010-4083.html
https://www.redhat.com/security/data/cve/CVE-2010-4157.html
https://www.redhat.com/security/data/cve/CVE-2010-4158.html
https://www.redhat.com/security/data/cve/CVE-2010-4169.html
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2010 Red Hat, Inc.
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