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______________________________________________________________________________
SUSE Security Announcement
Package: kernel
Announcement ID: SUSE-SA:2011:026
Date: Fri, 20 May 2011 10:00:00 +0000
Affected Products: SUSE Linux Enterprise Desktop 10 SP4
SLE SDK 10 SP4
SUSE Linux Enterprise Server 10 SP4
Vulnerability Type: remote denial of service
CVSS v2 Base Score: 7.9 (AV:A/AC:M/Au:N/C:C/I:C/A:C)
SUSE Default Package: no
Cross-References: CVE-2010-0008, CVE-2010-4251, CVE-2011-0191
CVE-2011-1010, CVE-2011-1012, CVE-2011-1016
CVE-2011-1017, CVE-2011-1160, CVE-2011-1163
CVE-2011-1180, CVE-2011-1182, CVE-2011-1476
CVE-2011-1477, CVE-2011-1493, CVE-2011-1573
CVE-2011-1577, CVE-2011-1585
Content of This Advisory:
1) Security Vulnerability Resolved:
Linux kernel security update
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
This kernel update for the SUSE Linux Enterprise 10 SP4 kernel fixes
several security issues and bugs.
Following security issues were fixed:
CVE-2011-1017,CVE-2011-1012: The code for evaluating LDM partitions
(in fs/partitions/ldm.c) contained bugs that could crash the kernel
for certain corrupted LDM partitions.
CVE-2011-1573: Bounds checking was missing in AARESOLVE_OFFSET, which
allowed local attackers to overwrite kernel memory and so escalate
privileges or crash the kernel.
CVE-2011-1585: When using a setuid root mount.cifs, local users could
hijack password protected mounted CIFS shares of other local users.
CVE-2011-1160: Kernel information via the TPM devices could by used
by local attackers to read kernel memory.
CVE-2011-1577: The Linux kernel automatically evaluated partition
tables of storage devices. The code for evaluating EFI GUID partitions
(in fs/partitions/efi.c) contained a bug that causes a kernel oops
on certain corrupted GUID partition tables, which might be used by
local attackers to crash the kernel or potentially execute code.
CVE-2011-1180: In the IrDA module, length fields provided by a peer
for names and attributes may be longer than the destination array
sizes and were not checked, this allowed local attackers (close to
the irda port) to potentially corrupt memory.
CVE-2010-4251: A system out of memory condition (denial of service)
could be triggered with a large socket backlog, exploitable by
local users. This has been addressed by backlog limiting.
CVE-2011-1016: The Radeon GPU drivers in the Linux kernel did not
properly validate data related to the AA resolve registers, which
allowed local users to write to arbitrary memory locations associated
with (1) Video RAM (aka VRAM) or (2) the Graphics Translation Table
(GTT) via crafted values.
CVE-2011-1493: When parsing the FAC_NATIONAL_DIGIS facilities field,
it was possible for a remote host to provide more digipeaters than
expected, resulting in heap corruption.
CVE-2011-1182: Local attackers could send signals to their programs
that looked like coming from the kernel, potentially gaining privileges
in the context of setuid programs.
CVE-2011-1010: The code for evaluating Mac partitions (in
fs/partitions/mac.c) contained a bug that could crash the kernel for
certain corrupted Mac partitions.
CVE-2011-1163: The code for evaluating OSF partitions (in
fs/partitions/osf.c) contained a bug that leaks data from kernel heap
memory to userspace for certain corrupted OSF partitions.
CVE-2011-1476: Specially crafted requests may be written to
/dev/sequencer resulting in an underflow when calculating a size for a
copy_from_user() operation in the driver for MIDI interfaces. On x86,
this just returns an error, but it could have caused memory corruption
on other architectures. Other malformed requests could have resulted
in the use of uninitialized variables.
CVE-2011-1477: Due to a failure to validate user-supplied indexes in
the driver for Yamaha YM3812 and OPL-3 chips, a specially crafted
ioctl request could have been sent to /dev/sequencer, resulting in
reading and writing beyond the bounds of heap buffers, and potentially
allowing privilege escalation.
CVE-2011-0191: A information leak in the XFS geometry calls could be
used by local attackers to gain access to kernel information.
CVE-2010-0008: The sctp_rcv_ootb function in the SCTP implementation
in the Linux kernel allowed remote attackers to cause a denial of
service (infinite loop) via (1) an Out Of The Blue (OOTB) chunk or
(2) a chunk of zero length.
2) Solution or Work-Around
There is no known workaround, please install the update packages.
3) Special Instructions and Notes
Please reboot the machine after installing the update.
4) Package Location and Checksums
The preferred method for installing security updates is to use the YaST
"Online Update" module or the "zypper" commandline tool. The
package and
patch management stack will detect which updates are required and
automatically perform the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command
rpm -Fhv <file.rpm>
to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:
SUSE Linux Enterprise Desktop 10 SP4 for AMD64 and Intel EM64T
?keywords=754d5abd3666eec2fbee9b225156757d
SUSE Linux Enterprise Server 10 SP4
?keywords=754d5abd3666eec2fbee9b225156757d
?keywords=937e57e402a3934a553aa1e31acd5203
?keywords=a2b86e88ca68bad088ef7137bd86a47d
?keywords=ebcb1b92f0fcbda4bb9c9cbf0cc086e1
?keywords=c44206b33270f7a4715bc2a20553ccb8
SLE SDK 10 SP4
?keywords=754d5abd3666eec2fbee9b225156757d
?keywords=a2b86e88ca68bad088ef7137bd86a47d
?keywords=ebcb1b92f0fcbda4bb9c9cbf0cc086e1
?keywords=c44206b33270f7a4715bc2a20553ccb8
SUSE Linux Enterprise Desktop 10 SP4
?keywords=754d5abd3666eec2fbee9b225156757d
?keywords=c44206b33270f7a4715bc2a20553ccb8
SUSE Linux Enterprise Desktop 10 SP4 for x86
?keywords=c44206b33270f7a4715bc2a20553ccb8
______________________________________________________________________________
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
______________________________________________________________________________
6) Authenticity Verification and Additional Information
- Announcement authenticity verification:
SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.
To verify the signature of the announcement, save it as text into a file
and run the command
gpg --verify <file>
replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:
gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team
<security@suse.de>"
where <DATE> is replaced by the date the document was signed.
If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command
gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc
- Package authenticity verification:
SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.
The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command
rpm -v --checksig <file.rpm>
to verify the signature of the package, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.
This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.
- SUSE runs two security mailing lists to which any interested party may
subscribe:
opensuse-security@opensuse.org
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security+subscribe@opensuse.org>.
opensuse-security-announce@opensuse.org
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security-announce+subscribe@opensuse.org>.
=====================================================================
SUSE's security contact is <security@suse.com> or
<security@suse.de>.
The <security@suse.de> public key is listed below.
=====================================================================
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular, the
clear text signature should show proof of the authenticity of the text.
SUSE Linux Products GmbH provides no warranties of any kind whatsoever
with respect to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>
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