SuSE: 2011-026: Linux kernel Security Update
Summary
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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
References
