Home / mailings [RHSA-2013:0744-01] Important: kernel security and bug fix update
Posted on 23 April 2013
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Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2013:0744-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0744.html
Issue date: 2013-04-23
CVE Names: CVE-2012-6537 CVE-2012-6546 CVE-2012-6547
CVE-2013-0349 CVE-2013-0913 CVE-2013-1767
CVE-2013-1773 CVE-2013-1774 CVE-2013-1792
CVE-2013-1796 CVE-2013-1797 CVE-2013-1798
CVE-2013-1826 CVE-2013-1827
=====================================================================
1. Summary:
Updated kernel packages that fix multiple security issues and several bugs
are now available for Red Hat Enterprise Linux 6.
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 Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. Description:
Security:
* An integer overflow flaw, leading to a heap-based buffer overflow, was
found in the way the Intel i915 driver in the Linux kernel handled the
allocation of the buffer used for relocation copies. A local user with
console access could use this flaw to cause a denial of service or escalate
their privileges. (CVE-2013-0913, Important)
* A buffer overflow flaw was found in the way UTF-8 characters were
converted to UTF-16 in the utf8s_to_utf16s() function of the Linux kernel's
FAT file system implementation. A local user able to mount a FAT file
system with the "utf8=1" option could use this flaw to crash the system or,
potentially, to escalate their privileges. (CVE-2013-1773, Important)
* A flaw was found in the way KVM handled guest time updates when the
buffer the guest registered by writing to the MSR_KVM_SYSTEM_TIME machine
state register (MSR) crossed a page boundary. A privileged guest user could
use this flaw to crash the host or, potentially, escalate their privileges,
allowing them to execute arbitrary code at the host kernel level.
(CVE-2013-1796, Important)
* A potential use-after-free flaw was found in the way KVM handled guest
time updates when the GPA (guest physical address) the guest registered by
writing to the MSR_KVM_SYSTEM_TIME machine state register (MSR) fell into a
movable or removable memory region of the hosting user-space process (by
default, QEMU-KVM) on the host. If that memory region is deregistered from
KVM using KVM_SET_USER_MEMORY_REGION and the allocated virtual memory
reused, a privileged guest user could potentially use this flaw to
escalate their privileges on the host. (CVE-2013-1797, Important)
* A flaw was found in the way KVM emulated IOAPIC (I/O Advanced
Programmable Interrupt Controller). A missing validation check in the
ioapic_read_indirect() function could allow a privileged guest user to
crash the host, or read a substantial portion of host kernel memory.
(CVE-2013-1798, Important)
* A race condition in install_user_keyrings(), leading to a NULL pointer
dereference, was found in the key management facility. A local,
unprivileged user could use this flaw to cause a denial of service.
(CVE-2013-1792, Moderate)
* A NULL pointer dereference in the XFRM implementation could allow a local
user who has the CAP_NET_ADMIN capability to cause a denial of service.
(CVE-2013-1826, Moderate)
* A NULL pointer dereference in the Datagram Congestion Control Protocol
(DCCP) implementation could allow a local user to cause a denial of
service. (CVE-2013-1827, Moderate)
* Information leak flaws in the XFRM implementation could allow a local
user who has the CAP_NET_ADMIN capability to leak kernel stack memory to
user-space. (CVE-2012-6537, Low)
* Two information leak flaws in the Asynchronous Transfer Mode (ATM)
subsystem could allow a local, unprivileged user to leak kernel stack
memory to user-space. (CVE-2012-6546, Low)
* An information leak was found in the TUN/TAP device driver in the
networking implementation. A local user with access to a TUN/TAP virtual
interface could use this flaw to leak kernel stack memory to user-space.
(CVE-2012-6547, Low)
* An information leak in the Bluetooth implementation could allow a local
user who has the CAP_NET_ADMIN capability to leak kernel stack memory to
user-space. (CVE-2013-0349, Low)
* A use-after-free flaw was found in the tmpfs implementation. A local user
able to mount and unmount a tmpfs file system could use this flaw to cause
a denial of service or, potentially, escalate their privileges.
(CVE-2013-1767, Low)
* A NULL pointer dereference was found in the Linux kernel's USB Inside Out
Edgeport Serial Driver implementation. An attacker with physical access to
a system could use this flaw to cause a denial of service. (CVE-2013-1774,
Low)
Red Hat would like to thank Andrew Honig of Google for reporting
CVE-2013-1796, CVE-2013-1797, and CVE-2013-1798. CVE-2013-1792 was
discovered by Mateusz Guzik of Red Hat EMEA GSS SEG Team.
4. Solution:
This update also fixes several bugs. Documentation for these changes 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.
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/knowledge/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/):
914298 - CVE-2013-0349 kernel: bluetooth HIDP implementation information disclosure
915592 - CVE-2013-1767 Kernel: tmpfs: fix use-after-free of mempolicy object
916115 - CVE-2013-1773 kernel: VFAT slab-based buffer overflow
916191 - CVE-2013-1774 Kernel: USB io_ti driver NULL pointer dereference in routine chase_port
916646 - CVE-2013-1792 Kernel: keys: race condition in install_user_keyrings()
917012 - CVE-2013-1796 kernel: kvm: buffer overflow in handling of MSR_KVM_SYSTEM_TIME
917013 - CVE-2013-1797 kernel: kvm: after free issue with the handling of MSR_KVM_SYSTEM_TIME
917017 - CVE-2013-1798 kernel: kvm: out-of-bounds access in ioapic indirect register reads
919164 - CVE-2013-1827 Kernel: dccp: check ccid before NULL poiter dereference
919384 - CVE-2013-1826 Kernel: xfrm_user: return error pointer instead of NULL
920471 - CVE-2013-0913 Kernel: drm/i915: heap writing overflow
922344 - CVE-2012-6547 Kernel: net/tun: ioctl() based information leaks
922383 - CVE-2012-6546 Kernel: atm: information leak in getsockopt & getsockname
922424 - CVE-2012-6537 Kernel: xfrm_user information leaks copy_to_user_
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
kernel-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-headers-2.6.32-358.6.1.el6.i686.rpm
perf-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-358.6.1.el6.noarch.rpm
kernel-firmware-2.6.32-358.6.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-headers-2.6.32-358.6.1.el6.x86_64.rpm
perf-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
noarch:
kernel-doc-2.6.32-358.6.1.el6.noarch.rpm
kernel-firmware-2.6.32-358.6.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-headers-2.6.32-358.6.1.el6.x86_64.rpm
perf-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
kernel-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-headers-2.6.32-358.6.1.el6.i686.rpm
perf-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-358.6.1.el6.noarch.rpm
kernel-firmware-2.6.32-358.6.1.el6.noarch.rpm
ppc64:
kernel-2.6.32-358.6.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debug-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-358.6.1.el6.ppc64.rpm
kernel-devel-2.6.32-358.6.1.el6.ppc64.rpm
kernel-headers-2.6.32-358.6.1.el6.ppc64.rpm
perf-2.6.32-358.6.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
s390x:
kernel-2.6.32-358.6.1.el6.s390x.rpm
kernel-debug-2.6.32-358.6.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-358.6.1.el6.s390x.rpm
kernel-devel-2.6.32-358.6.1.el6.s390x.rpm
kernel-headers-2.6.32-358.6.1.el6.s390x.rpm
kernel-kdump-2.6.32-358.6.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-358.6.1.el6.s390x.rpm
perf-2.6.32-358.6.1.el6.s390x.rpm
perf-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
x86_64:
kernel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-headers-2.6.32-358.6.1.el6.x86_64.rpm
perf-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
ppc64:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-358.6.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
python-perf-2.6.32-358.6.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.ppc64.rpm
s390x:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-358.6.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
perf-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
python-perf-2.6.32-358.6.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.s390x.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
kernel-devel-2.6.32-358.6.1.el6.i686.rpm
kernel-headers-2.6.32-358.6.1.el6.i686.rpm
perf-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-358.6.1.el6.noarch.rpm
kernel-firmware-2.6.32-358.6.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.6.1.el6.x86_64.rpm
kernel-headers-2.6.32-358.6.1.el6.x86_64.rpm
perf-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-358.6.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-358.6.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
python-perf-2.6.32-358.6.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-358.6.1.el6.i686.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.6.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-2.6.32-358.6.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.6.1.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-2012-6537.html
https://www.redhat.com/security/data/cve/CVE-2012-6546.html
https://www.redhat.com/security/data/cve/CVE-2012-6547.html
https://www.redhat.com/security/data/cve/CVE-2013-0349.html
https://www.redhat.com/security/data/cve/CVE-2013-0913.html
https://www.redhat.com/security/data/cve/CVE-2013-1767.html
https://www.redhat.com/security/data/cve/CVE-2013-1773.html
https://www.redhat.com/security/data/cve/CVE-2013-1774.html
https://www.redhat.com/security/data/cve/CVE-2013-1792.html
https://www.redhat.com/security/data/cve/CVE-2013-1796.html
https://www.redhat.com/security/data/cve/CVE-2013-1797.html
https://www.redhat.com/security/data/cve/CVE-2013-1798.html
https://www.redhat.com/security/data/cve/CVE-2013-1826.html
https://www.redhat.com/security/data/cve/CVE-2013-1827.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.4_Technical_Notes/kernel.html
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2013 Red Hat, Inc.
