SuSE: 2011-008: Linux kernel Security Update
Summary
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______________________________________________________________________________
SUSE Security Announcement
Package: kernel
Announcement ID: SUSE-SA:2011:008
Date: Fri, 11 Feb 2011 12:00:00 +0000
Affected Products: SUSE SLES 9
Open Enterprise Server
Novell Linux POS 9
Vulnerability Type: local privilege escalation, remote denial of service
CVSS v2 Base Score: 7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
SUSE Default Package: yes
Cross-References: CVE-2010-2946, CVE-2010-3067, CVE-2010-3310
CVE-2010-3442, CVE-2010-3848, CVE-2010-3849
CVE-2010-3850, CVE-2010-3873, CVE-2010-4072
CVE-2010-4073, CVE-2010-4081, CVE-2010-4083
CVE-2010-4157, CVE-2010-4158, CVE-2010-4160
CVE-2010-4164, CVE-2010-4242, CVE-2010-4258
CVE-2010-4342, CVE-2010-4527, CVE-2010-4529
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 patch updates the SUSE Linux Enterprise Server 9 kernel to fix
various security issues and some bugs.
Following security issues were fixed:
CVE-2010-4242: The hci_uart_tty_open function in the HCI UART driver
(drivers/bluetooth/hci_ldisc.c) in the Linux kernel did not verify
whether the tty has a write operation, which allowed local users to cause a denial of service (NULL pointer dereference) via vectors related to the Bluetooth driver.
CVE-2010-4527: The load_mixer_volumes function in sound/oss/soundcard.c
in the OSS sound subsystem in the Linux kernel incorrectly expected
that a certain name field ends with a '\0' character, which allowed
local users to conduct buffer overflow attacks and gain privileges,
or possibly obtain sensitive information from kernel memory, via a
SOUND_MIXER_SETLEVELS ioctl call.
CVE-2010-4529: Integer underflow in the irda_getsockopt function in
net/irda/af_irda.c in the Linux kernel on platforms other than x86
allowed local users to obtain potentially sensitive information from
kernel heap memory via an IRLMP_ENUMDEVICES getsockopt call.
CVE-2010-4342: The aun_incoming function in net/econet/af_econet.c in
the Linux kernel, when Econet is enabled, allowed remote attackers to cause a denial of service (NULL pointer dereference and OOPS)
by sending an Acorn Universal Networking (AUN) packet over UDP.
CVE-2010-2946: fs/jfs/xattr.c in the Linux kernel did not properly
handle a certain legacy format for storage of extended attributes,
which might have allowed local users by bypass intended xattr namespace
restrictions via an "os2." substring at the beginning of a name.
CVE-2010-3848: Stack-based buffer overflow in the econet_sendmsg
function in net/econet/af_econet.c in the Linux kernel, when an
econet address is configured, allowed local users to gain privileges
by providing a large number of iovec structures.
CVE-2010-3849: The econet_sendmsg function in net/econet/af_econet.c
in the Linux kernel, when an econet address is configured, allowed
local users to cause a denial of service (NULL pointer dereference
and OOPS) via a sendmsg call that specifies a NULL value for the
remote address field.
CVE-2010-3850: The ec_dev_ioctl function in net/econet/af_econet.c
in the Linux kernel does not require the CAP_NET_ADMIN capability,
which allowed local users to bypass intended access restrictions and
configure econet addresses via an SIOCSIFADDR ioctl call.
CVE-2010-4258: The do_exit function in kernel/exit.c in the Linux
kernel did not properly handle a KERNEL_DS get_fs value, which
allowed local users to bypass intended access_ok restrictions,
overwrite arbitrary kernel memory locations, and gain privileges by
leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault,
as demonstrated by vectors involving the clear_child_tid feature and
the splice system call.
CVE-2010-4160: Multiple integer overflows in the (1) pppol2tp_sendmsg
function in net/l2tp/l2tp_ppp.c, and the (2) l2tp_ip_sendmsg function
in net/l2tp/l2tp_ip.c, in the PPPoL2TP and IPoL2TP implementations
in the Linux kernel allowed local users to cause a denial of service
(heap memory corruption and panic) or possibly gain privileges via
a crafted sendto call.
CVE-2010-4157: Integer overflow in the ioc_general function in
drivers/scsi/gdth.c in the Linux kernel on 64-bit platforms allowed local
users to cause a denial of service (memory corruption) or possibly have
unspecified other impact via a large argument in an ioctl call.
CVE-2010-4164: Multiple integer underflows in the x25_parse_facilities
function in net/x25/x25_facilities.c in the Linux kernel allowed remote
attackers to cause a denial of service (system crash) via malformed
X.25 (1) X25_FAC_CLASS_A, (2) X25_FAC_CLASS_B, (3) X25_FAC_CLASS_C,
or (4) X25_FAC_CLASS_D facility data, a different vulnerability than
CVE-2010-3873.
CVE-2010-4158: The sk_run_filter function in net/core/filter.c in the
Linux kernel did not check whether a certain memory location has been
initialized before executing a (1) BPF_S_LD_MEM or (2) BPF_S_LDX_MEM
instruction, which allowed local users to obtain potentially sensitive
information from kernel stack memory via a crafted socket filter.
CVE-2010-3442: Multiple integer overflows in the snd_ctl_new function
in sound/core/control.c in the Linux kernel allowed local users to
cause a denial of service (heap memory corruption) or possibly have
unspecified other impact via a crafted (1) SNDRV_CTL_IOCTL_ELEM_ADD or
(2) SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl call.
CVE-2010-4081: The snd_hdspm_hwdep_ioctl function in
sound/pci/rme9652/hdspm.c in the Linux kernel did not initialize
a certain structure, which allowed local users to obtain
potentially sensitive information from kernel stack memory via an
SNDRV_HDSPM_IOCTL_GET_CONFIG_INFO ioctl call.
CVE-2010-4073: The ipc subsystem in the Linux kernel did not
initialize certain structures, which allowed local users to obtain
potentially sensitive information from kernel stack memory via
vectors related to the (1) compat_sys_semctl, (2) compat_sys_msgctl,
and (3) compat_sys_shmctl functions in ipc/compat.c; and the (4)
compat_sys_mq_open and (5) compat_sys_mq_getsetattr functions in
ipc/compat_mq.c.
CVE-2010-4072: The copy_shmid_to_user function in ipc/shm.c in the
Linux kernel did not initialize a certain structure, which allowed
local users to obtain potentially sensitive information from kernel
stack memory via vectors related to the shmctl system call and the
"old shm interface."
CVE-2010-4083: The copy_semid_to_user function in ipc/sem.c in the
Linux kernel did not initialize a certain structure, which allowed
local users to obtain potentially sensitive information from kernel
stack memory via a (1) IPC_INFO, (2) SEM_INFO, (3) IPC_STAT, or (4)
SEM_STAT command in a semctl system call.
CVE-2010-3067: Integer overflow in the do_io_submit function in
fs/aio.c in the Linux kernel allowed local users to cause a denial
of service or possibly have unspecified other impact via crafted use
of the io_submit system call.
CVE-2010-3310: Multiple integer signedness errors in net/rose/af_rose.c
in the Linux kernel allowed local users to cause a denial of service
(heap memory corruption) or possibly have unspecified other impact
via a rose_getname function call, related to the rose_bind and
rose_connect functions.
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
