BugTraq
[ MDVSA-2011:051 ] kernel Mar 21 2011 03:05PM
security mandriva com
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Mandriva Linux Security Advisory MDVSA-2011:051
http://www.mandriva.com/security/
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Package : kernel
Date : March 18, 2011
Affected: Corporate 4.0
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Problem Description:

The do_anonymous_page function in mm/memory.c in the Linux kernel
does not properly separate the stack and the heap, which allows
context-dependent attackers to execute arbitrary code by writing
to the bottom page of a shared memory segment, as demonstrated by a
memory-exhaustion attack against the X.Org X server. (CVE-2010-2240)

The do_tcp_setsockopt function in net/ipv4/tcp.c in the Linux kernel
does not properly restrict TCP_MAXSEG (aka MSS) values, which allows
local users to cause a denial of service (OOPS) via a setsockopt call
that specifies a small value, leading to a divide-by-zero error or
incorrect use of a signed integer. (CVE-2010-4165)

The copy_shmid_to_user function in ipc/shm.c in the Linux kernel
does not initialize a certain structure, which allows 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-2010-4072)

The ipc subsystem in the Linux kernel does not initialize certain
structures, which allows 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-2010-4073)

The copy_semid_to_user function in ipc/sem.c in the Linux kernel does
not initialize a certain structure, which allows 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-2010-4083)

The sisfb_ioctl function in drivers/video/sis/sis_main.c in the Linux
kernel does not properly initialize a certain structure member, which
allows local users to obtain potentially sensitive information from
kernel stack memory via an FBIOGET_VBLANK ioctl call. (CVE-2010-4078)

The eql_g_master_cfg function in drivers/net/eql.c in the Linux kernel
does not properly initialize a certain structure member, which allows
local users to obtain potentially sensitive information from kernel
stack memory via an EQL_GETMASTRCFG ioctl call. (CVE-2010-3297)

Integer signedness error in the pkt_find_dev_from_minor function in
drivers/block/pktcdvd.c in the Linux kernel allows local users to
obtain sensitive information from kernel memory or cause a denial of
service (invalid pointer dereference and system crash) via a crafted
index value in a PKT_CTRL_CMD_STATUS ioctl call. (CVE-2010-3437)

fs/jfs/xattr.c in the Linux kernel does not properly handle a certain
legacy format for storage of extended attributes, which might allow
local users by bypass intended xattr namespace restrictions via an
os2. substring at the beginning of a name. (CVE-2010-2946)

Multiple integer signedness errors in net/rose/af_rose.c in the
Linux kernel allow 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. (CVE-2010-3310)

Integer overflow in the do_io_submit function in fs/aio.c in the
Linux allows local users to cause a denial of service or possibly
have unspecified other impact via crafted use of the io_submit system
call. (CVE-2010-3067)

net/bridge/netfilter/ebtables.c in the ebtables module in the
netfilter framework in the Linux kernel does not require the
CAP_NET_ADMIN capability for setting or modifying rules, which
allows local users to bypass intended access restrictions and
configure arbitrary network-traffic filtering via a modified ebtables
application. (CVE-2010-0007)

The ax25_getname function in net/ax25/af_ax25.c in the Linux kernel
does not initialize a certain structure, which allows local users to
obtain potentially sensitive information from kernel stack memory by
reading a copy of this structure. (CVE-2010-3875)

fs/cifs/cifssmb.c in the CIFS implementation in the Linux kernel
allows remote attackers to cause a denial of service (panic) via an
SMB response packet with an invalid CountHigh value, as demonstrated
by a response from an OS/2 server, related to the CIFSSMBWrite and
CIFSSMBWrite2 functions. (CVE-2010-2248)

The personality subsystem in the Linux kernel has a PER_CLEAR_ON_SETID
setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO
flags when executing a setuid or setgid program, which makes it
easier for local users to leverage the details of memory usage to (1)
conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr
protection mechanism, or (3) defeat address space layout randomization
(ASLR). (CVE-2009-1895)

The load_flat_shared_library function in fs/binfmt_flat.c in the
flat subsystem in the Linux kernel allows local users to cause a
denial of service (NULL pointer dereference and system crash) or
possibly have unspecified other impact by executing a shared flat
binary. (CVE-2009-2768)

The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client
in the Linux kernel allows remote NFS servers to cause a denial of
service (NULL pointer dereference and panic) by sending a certain
response containing incorrect file attributes, which trigger attempted
use of an open file that lacks NFSv4 state. (CVE-2009-3726)

The UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c
in the Linux kernel allows local users to gain privileges or cause
a denial of service (NULL pointer dereference and system crash) via
vectors involving the MSG_MORE flag and a UDP socket. (CVE-2009-2698)

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. (CVE-2009-3080)

Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR
implementation in the NFS server in the Linux kernel allow remote
attackers to cause a denial of service (panic) or possibly execute
arbitrary code via a crafted NFSv4 compound WRITE request, related
to the read_buf and nfsd4_decode_compound functions. (CVE-2010-2521)

net/ipv6/tcp_ipv6.c in Linux kernel inadvertently copies the
ipv6_fl_socklist from a listening TCP socket to child sockets, which
allows local users to cause a denial of service (OOPS) or double-free
by opening a listeing IPv6 socket,
attaching a flow label, and connecting to that socket. (CVE-2007-1592)

The ec_dev_ioctl function in net/econet/af_econet.c in the Linux
kernel does not require the CAP_NET_ADMIN capability, which allows
local users to bypass intended access restrictions and configure
econet addresses via an SIOCSIFADDR ioctl call. (CVE-2010-3850)

All these problems have been corrected, to update your kernel, please
follow the directions located at:

http://www.mandriva.com/en/security/kernelupdate
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References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2240
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4165
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4072
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4073
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4083
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4078
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3297
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3437
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2946
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3310
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3067
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0007
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3875
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2248
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1895
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2768
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3726
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2698
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3080
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2521
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1592
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3850
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Updated Packages:

Corporate 4.0:
890c747a6a23bec5203df80fea437577 corporate/4.0/i586/kernel-2.6.12.43mdk-1-1mdk.i586.rpm
035e67228d5d802ec1f1c435c336f1e4 corporate/4.0/i586/kernel-BOOT-2.6.12.43mdk-1-1mdk.i586.rpm
91e5bd4db307150fa5fbf50557800d0b corporate/4.0/i586/kernel-doc-2.6.12.43mdk-1-1mdk.i586.rpm
709df005ea5296caa560bb214106bba0 corporate/4.0/i586/kernel-i586-up-1GB-2.6.12.43mdk-1-1mdk.i586.rpm
a6a70d6d6d243e8899d28418841d3b30 corporate/4.0/i586/kernel-i686-up-4GB-2.6.12.43mdk-1-1mdk.i586.rpm
fbf3f03e88f64a342299a6d1f71b77ff corporate/4.0/i586/kernel-smp-2.6.12.43mdk-1-1mdk.i586.rpm
00075e6ecb976667e6acc84b90a457e2 corporate/4.0/i586/kernel-source-2.6.12.43mdk-1-1mdk.i586.rpm
be59ed3d9edaef100c73689ed8889e44 corporate/4.0/i586/kernel-source-stripped-2.6.12.43mdk-1-1mdk.i586.rpm
d97fb8a8f4e91bda8fe196ae42db2bda corporate/4.0/i586/kernel-xbox-2.6.12.43mdk-1-1mdk.i586.rpm
2ebefb2a2891b11ec2e0b8a1a0182861 corporate/4.0/i586/kernel-xen0-2.6.12.43mdk-1-1mdk.i586.rpm
fde48ce47fab86665c576c49af171ff6 corporate/4.0/i586/kernel-xenU-2.6.12.43mdk-1-1mdk.i586.rpm
c5b74f984e252360a20582e9acac64da corporate/4.0/SRPMS/kernel-2.6.12.43mdk-1-1mdk.src.rpm

Corporate 4.0/X86_64:
f2a01a7f51ed7472dd997e095753be7b corporate/4.0/x86_64/kernel-2.6.12.43mdk-1-1mdk.x86_64.rpm
524510d3382ec95de0ca76dd4f760b2e corporate/4.0/x86_64/kernel-BOOT-2.6.12.43mdk-1-1mdk.x86_64.rpm
b0e576639faa836c7895ce05b4a4ac26 corporate/4.0/x86_64/kernel-doc-2.6.12.43mdk-1-1mdk.x86_64.rpm
e56515d6f9675fc366b963fbfc7fbab4 corporate/4.0/x86_64/kernel-smp-2.6.12.43mdk-1-1mdk.x86_64.rpm
20ac4ec4df1df4c170676116769c3f78 corporate/4.0/x86_64/kernel-source-2.6.12.43mdk-1-1mdk.x86_64.rpm
5309f98e74877b41d99b75a1e04f0f74 corporate/4.0/x86_64/kernel-source-stripped-2.6.12.43mdk-1-1mdk.x86_64.r
pm
cdae6ee98462fb2503a7f0fc41381dfe corporate/4.0/x86_64/kernel-xen0-2.6.12.43mdk-1-1mdk.x86_64.rpm
e4fedcae85c0c3ba6d2e169f3faf3d06 corporate/4.0/x86_64/kernel-xenU-2.6.12.43mdk-1-1mdk.x86_64.rpm
c5b74f984e252360a20582e9acac64da corporate/4.0/SRPMS/kernel-2.6.12.43mdk-1-1mdk.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/security/advisories

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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