SUSE Security Announcement
Package: kernel
Announcement ID: SUSE-SA:2010:001
Date: Thu, 07 Jan 2010 18:00:00 +0000
Affected Products: openSUSE 11.2
Vulnerability Type: remote denial of service
CVSS v2 Base Score: 7.8
SUSE Default Package: yes
Cross-References: CVE-2009-1298, CVE-2009-3080, CVE-2009-3547
CVE-2009-3621, CVE-2009-3624, CVE-2009-3939
CVE-2009-4005, CVE-2009-4021, CVE-2009-4026
CVE-2009-4027, CVE-2009-4131, CVE-2009-4138
CVE-2009-4306, CVE-2009-4307, CVE-2009-4308
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
The Linux kernel for openSUSE 11.2 was updated to 2.6.31.8 fixing lots of
bugs and several security issues.
Following security issues were fixed:
CVE-2009-4131: A file overwrite issue on the ext4 filesystem could
be used by local attackers that have write access to a filesystem to
change/overwrite files of other users, including root.
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVE-2009-1298: A remote denial of service by sending overly long packets
could be used by remote attackers to crash a machine.
CVSS v2 Base Score: 7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVE-2009-4026: The mac80211 subsystem in the Linux kernel allows remote
attackers to cause a denial of service (panic) via a crafted Delete Block
ACK (aka DELBA) packet, related to an erroneous “code shuffling patch.”
CVSS v2 Base Score: 7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVE-2009-4027: Race condition in the mac80211 subsystem in the Linux
kernel allows remote attackers to cause a denial of service (system crash)
via a Delete Block ACK (aka DELBA) packet that triggers a certain state
change in the absence of an aggregation session.
CVSS v2 Base Score: 7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
CVE-2009-3939: The poll_mode_io file for the megaraid_sas driver in the
Linux kernel has world-writable permissions, which allows local users
to change the I/O mode of the driver by modifying this file.
CVSS v2 Base Score: 6.6 (AV:L/AC:L/Au:N/C:N/I:C/A:C)
CVE-2009-4005: The collect_rx_frame function in
drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows attackers to
have an unspecified impact via a crafted HDLC packet that arrives over
ISDN and triggers a buffer under-read. This requires the attacker
to access the machine on ISDN protocol level.
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVE-2009-3080: Array index error in the gdth_read_event function in
drivers/scsi/gdth.c in the Linux kernel allows local users to cause a
denial of service or possibly gain privileges via a negative event index
in an IOCTL request.
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVE-2009-3624: The get_instantiation_keyring function in
security/keys/keyctl.c in the KEYS subsystem in the Linux kernel does not
properly maintain the reference count of a keyring, which allows local
users to gain privileges or cause a denial of service (OOPS) via vectors
involving calls to this function without specifying a keyring by ID,
as demonstrated by a series of keyctl request2 and keyctl list commands.
CVSS v2 Base Score: 4.6 (AV:L/AC:L/Au:N/C:P/I:P/A:P)
CVE-2009-4021: The fuse_direct_io function in fs/fuse/file.c in the fuse
subsystem in the Linux kernel might allow attackers to cause a denial
of service (invalid pointer dereference and OOPS) via vectors possibly
related to a memory-consumption attack.
CVSS v2 Base Score: 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVE-2009-3547: Multiple race conditions in fs/pipe.c in the Linux kernel
allow local users to cause a denial of service (NULL pointer dereference
and system crash) or gain privileges by attempting to open an anonymous
pipe via a /proc/*/fd/ pathname. As openSUSE 11.2 by default sets
mmap_min_addr
protection, this issue will just Oops the kernel and not be able
to execute code.
CVSS v2 Base Score: 6.9 (AV:L/AC:M/Au:N/C:C/I:C/A:C)
CVE-2009-3621: net/unix/af_unix.c in the Linux kernel allows local
users to cause a denial of service (system hang) by creating an
abstract-namespace AF_UNIX listening socket, performing a shutdown
operation on this socket, and then performing a series of connect
operations to this socket.
CVSS v2 Base Score: 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVE-2009-4138: drivers/firewire/ohci.c in the Linux kernel when
packet-per-buffer mode is used, allows local users to cause a denial
of service (NULL pointer dereference and system crash) or possibly have
unknown other impact via an unspecified ioctl associated with receiving
an ISO packet that contains zero in the payload-length field.
CVSS v2 Base Score: 4.7 (AV:L/AC:M/Au:N/C:N/I:N/A:C)
CVE-2009-4308: The ext4_decode_error function in fs/ext4/super.c in the
ext4 filesystem in the Linux kernel allows user-assisted remote attackers
to cause a denial of service (NULL pointer dereference), and possibly
have unspecified other impact, via a crafted read-only filesystem that
lacks a journal.
CVSS v2 Base Score: 7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
CVE-2009-4307: The ext4_fill_flex_info function in fs/ext4/super.c
in the Linux kernel allows user-assisted remote attackers to cause a
denial of service (divide-by-zero error and panic) via a malformed ext4
filesystem containing a super block with a large FLEX_BG group size
(aka s_log_groups_per_flex value).
CVSS v2 Base Score: 7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
CVE-2009-4306: Unspecified vulnerability in the EXT4_IOC_MOVE_EXT
(aka move extents) ioctl implementation in the ext4 filesystem in
the Linux kernel allows local users to cause a denial of service
(filesystem corruption) via unknown vectors, a different vulnerability
than CVE-2009-4131.
CVSS v2 Base Score: 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVE-2009-4131: The EXT4_IOC_MOVE_EXT (aka move extents) ioctl
implementation in the ext4 filesystem in the Linux kernel allows local
users to overwrite arbitrary files via a crafted request, related to
insufficient checks for file permissions. This can lead to privilege
escalations.
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Also, the rt2870 and rt2860 drivers were refreshed to the level they
are in the Linux 2.6.32 kernel, bringing new device support and new
functionality.
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 (YOU) tool. YOU detects which updates are required and
automatically performs 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.
x86 Platform:
openSUSE 11.2:
http://download.opensuse.org/debug/update/11.2/rpm/i586/kernel-pae-debuginfo-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/debug/update/11.2/rpm/i586/kernel-xen-debuginfo-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-debug-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-debug-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-debug-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-default-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-default-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-default-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-desktop-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-desktop-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-desktop-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-pae-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-pae-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-pae-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-syms-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-trace-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-trace-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-trace-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-vanilla-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-vanilla-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-vanilla-devel-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-xen-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-xen-base-2.6.31.8-0.1.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/kernel-xen-devel-2.6.31.8-0.1.1.i586.rpm
Platform Independent:
openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/noarch/kernel-source-2.6.31.8-0.1.1.noarch.rpm
http://download.opensuse.org/update/11.2/rpm/noarch/kernel-source-vanilla-2.6.31.8-0.1.1.noarch.rpm
x86-64 Platform:
openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-debug-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-debug-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-debug-devel-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-default-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-default-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-default-devel-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-desktop-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-desktop-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-desktop-devel-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-syms-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-trace-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-trace-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-trace-devel-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-vanilla-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-vanilla-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-vanilla-devel-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-xen-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-xen-base-2.6.31.8-0.1.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/kernel-xen-devel-2.6.31.8-0.1.1.x86_64.rpm
Sources:
openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/src/kernel-debug-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-default-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-desktop-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-pae-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-source-2.6.31.8-0.1.1.src.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-syms-2.6.31.8-0.1.1.src.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-trace-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-vanilla-2.6.31.8-0.1.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/kernel-xen-2.6.31.8-0.1.1.nosrc.rpm
______________________________________________________________________________
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@xxxxxxx>”
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@xxxxxxx 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@xxxxxxxxxxxx
– 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@xxxxxxxxxxxx>.
opensuse-security-announce@xxxxxxxxxxxx
– 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@xxxxxxxxxxxx>.
=====================================================================
SUSE’s security contact is <security@xxxxxxxx> or <security@xxxxxxx>.
The <security@xxxxxxx> 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.
