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SCIENTIFIC-LINUX-ERRATA  November 2007

SCIENTIFIC-LINUX-ERRATA November 2007

Subject:

Security ERRATA for kernel on SL4.x i386/x86_64

From:

Troy Dawson <[log in to unmask]>

Reply-To:

Troy Dawson <[log in to unmask]>

Date:

Thu, 1 Nov 2007 16:54:53 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (157 lines)

Synopsis:	Important: kernel security update
Issue date:	2007-11-01
CVE Names:	CVE-2006-6921 CVE-2007-2878 CVE-2007-3105
                 CVE-2007-3739 CVE-2007-3740 CVE-2007-3843
                 CVE-2007-3848 CVE-2007-4308 CVE-2007-4571

* A flaw was found in the handling of process death signals. This allowed a
local user to send arbitrary signals to the suid-process executed by that
user. A successful exploitation of this flaw depends on the structure of
the suid-program and its signal handling. (CVE-2007-3848, Important)

* A flaw was found in the CIFS file system. This could cause the umask
values of a process to not be honored on CIFS file systems where UNIX
extensions are supported. (CVE-2007-3740, Important)

* A flaw was found in the VFAT compat ioctl handling on 64-bit systems.
This allowed a local user to corrupt a kernel_dirent struct and cause a
denial of service. (CVE-2007-2878, Important)

* A flaw was found in the Advanced Linux Sound Architecture (ALSA). A local
user who had the ability to read the /proc/driver/snd-page-alloc file could
see portions of kernel memory. (CVE-2007-4571, Moderate)

* A flaw was found in the aacraid SCSI driver. This allowed a local user to
make ioctl calls to the driver that should be restricted to privileged
users. (CVE-2007-4308, Moderate)

* A flaw was found in the stack expansion when using the hugetlb kernel on
PowerPC systems. This allowed a local user to cause a denial of service.
(CVE-2007-3739, Moderate)

* A flaw was found in the handling of zombie processes. A local user could
create processes that would not be properly reaped which could lead to a
denial of service. (CVE-2006-6921, Moderate)

* A flaw was found in the CIFS file system handling. The mount option
"sec=" did not enable integrity checking or produce an error message if
used. (CVE-2007-3843, Low)

* A flaw was found in the random number generator implementation that
allowed a local user to cause a denial of service or possibly gain
privileges. This flaw could be exploited if the root user raised the
default wakeup threshold over the size of the output pool.
(CVE-2007-3105, Low)

Additionally, the following bugs were fixed:

* A flaw was found in the kernel netpoll code, creating a potential
deadlock condition.  If the xmit_lock for a given network interface is
held, and a subsequent netpoll event is generated from within the lock
owning context (a console message for example), deadlock on that cpu will
result, because the netpoll code will attempt to re-acquire the xmit_lock.
  The fix is to, in the netpoll code, only attempt to take the lock, and
fail if it is already acquired (rather than block on it), and queue the
message to be sent for later delivery.  Any user of netpoll code in the
kernel (netdump or netconsole services), is exposed to this problem, and
should resolve the issue by upgrading to this kernel release immediately.

* A flaw was found where, under 64-bit mode (x86_64), AMD processors were
not able to address greater than a 40-bit physical address space; and Intel
processors were only able to address up to a 36-bit physical address space.
The fix is to increase the physical addressing for an AMD processor to 48
bits, and an Intel processor to 38 bits.

* A flaw was found in the xenU kernel that may prevent a paravirtualized
guest with more than one CPU from starting when running under an Scientific
Linux 5.1 hypervisor.  The fix is to allow your Scientific Linux 4 Xen SMP
guests to boot under a 5.1 hypervisor.

SL 4.x

   SRPMS:
kernel-2.6.9-55.0.12.EL.src.rpm
   i386:
kernel-2.6.9-55.0.12.EL.i686.rpm
kernel-devel-2.6.9-55.0.12.EL.i686.rpm
kernel-doc-2.6.9-55.0.12.EL.noarch.rpm
kernel-hugemem-2.6.9-55.0.12.EL.i686.rpm
kernel-hugemem-devel-2.6.9-55.0.12.EL.i686.rpm
kernel-smp-2.6.9-55.0.12.EL.i686.rpm
kernel-smp-devel-2.6.9-55.0.12.EL.i686.rpm
kernel-xenU-2.6.9-55.0.12.EL.i686.rpm
kernel-xenU-devel-2.6.9-55.0.12.EL.i686.rpm
   Dependancies:
kernel-module-fuse-2.6.9-55.0.12.EL-2.5.3-1.SL.i686.rpm
kernel-module-fuse-2.6.9-55.0.12.ELhugemem-2.5.3-1.SL.i686.rpm
kernel-module-fuse-2.6.9-55.0.12.ELsmp-2.5.3-1.SL.i686.rpm
kernel-module-fuse-2.6.9-55.0.12.ELxenU-2.5.3-1.SL.i686.rpm
kernel-module-ipw3945-2.6.9-55.0.12.EL-1.1.0-1.SL4.i686.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELhugemem-1.1.0-1.SL4.i686.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELsmp-1.1.0-1.SL4.i686.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELxenU-1.1.0-1.SL4.i686.rpm
kernel-module-madwifi-2.6.9-55.0.12.EL-0.9.3.1-10.sl4.i686.rpm
kernel-module-madwifi-2.6.9-55.0.12.ELhugemem-0.9.3.1-10.sl4.i686.rpm
kernel-module-madwifi-2.6.9-55.0.12.ELsmp-0.9.3.1-10.sl4.i686.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.EL-0.9.3.1-10.sl4.i686.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.ELhugemem-0.9.3.1-10.sl4.i686.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.ELsmp-0.9.3.1-10.sl4.i686.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.EL-1.41-1.SL.i686.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELhugemem-1.41-1.SL.i686.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELsmp-1.41-1.SL.i686.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELxenU-1.41-1.SL.i686.rpm
kernel-module-openafs-2.6.9-55.0.12.EL-1.4.4-46.SL4.i686.rpm
kernel-module-openafs-2.6.9-55.0.12.ELhugemem-1.4.4-46.SL4.i686.rpm
kernel-module-openafs-2.6.9-55.0.12.ELsmp-1.4.4-46.SL4.i686.rpm
kernel-module-openafs-2.6.9-55.0.12.ELxenU-1.4.4-46.SL4.i686.rpm
kernel-module-r1000-2.6.9-55.0.12.EL-2.2-2.SL4x.i686.rpm
kernel-module-r1000-2.6.9-55.0.12.ELhugemem-2.2-2.SL4x.i686.rpm
kernel-module-r1000-2.6.9-55.0.12.ELsmp-2.2-2.SL4x.i686.rpm
kernel-module-r1000-2.6.9-55.0.12.ELxenU-2.2-2.SL4x.i686.rpm

   x86_64:
kernel-2.6.9-55.0.12.EL.x86_64.rpm
kernel-devel-2.6.9-55.0.12.EL.x86_64.rpm
kernel-doc-2.6.9-55.0.12.EL.noarch.rpm
kernel-largesmp-2.6.9-55.0.12.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-55.0.12.EL.x86_64.rpm
kernel-smp-2.6.9-55.0.12.EL.x86_64.rpm
kernel-smp-devel-2.6.9-55.0.12.EL.x86_64.rpm
kernel-xenU-2.6.9-55.0.12.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-55.0.12.EL.x86_64.rpm
   Dependancies:
kernel-module-fuse-2.6.9-55.0.12.EL-2.5.3-1.SL.x86_64.rpm
kernel-module-fuse-2.6.9-55.0.12.ELlargesmp-2.5.3-1.SL.x86_64.rpm
kernel-module-fuse-2.6.9-55.0.12.ELsmp-2.5.3-1.SL.x86_64.rpm
kernel-module-fuse-2.6.9-55.0.12.ELxenU-2.5.3-1.SL.x86_64.rpm
kernel-module-ipw3945-2.6.9-55.0.12.EL-1.1.0-1.SL4.x86_64.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELlargesmp-1.1.0-1.SL4.x86_64.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELsmp-1.1.0-1.SL4.x86_64.rpm
kernel-module-ipw3945-2.6.9-55.0.12.ELxenU-1.1.0-1.SL4.x86_64.rpm
kernel-module-madwifi-2.6.9-55.0.12.EL-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-madwifi-2.6.9-55.0.12.ELlargesmp-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-madwifi-2.6.9-55.0.12.ELsmp-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.EL-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.ELlargesmp-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-madwifi-hal-2.6.9-55.0.12.ELsmp-0.9.3.1-10.sl4.x86_64.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.EL-1.41-1.SL.x86_64.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELlargesmp-1.41-1.SL.x86_64.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELsmp-1.41-1.SL.x86_64.rpm
kernel-module-ndiswrapper-2.6.9-55.0.12.ELxenU-1.41-1.SL.x86_64.rpm
kernel-module-openafs-2.6.9-55.0.12.EL-1.4.4-46.SL4.x86_64.rpm
kernel-module-openafs-2.6.9-55.0.12.ELlargesmp-1.4.4-46.SL4.x86_64.rpm
kernel-module-openafs-2.6.9-55.0.12.ELsmp-1.4.4-46.SL4.x86_64.rpm
kernel-module-openafs-2.6.9-55.0.12.ELxenU-1.4.4-46.SL4.x86_64.rpm
kernel-module-r1000-2.6.9-55.0.12.EL-2.2-2.SL4x.x86_64.rpm
kernel-module-r1000-2.6.9-55.0.12.ELlargesmp-2.2-2.SL4x.x86_64.rpm
kernel-module-r1000-2.6.9-55.0.12.ELsmp-2.2-2.SL4x.x86_64.rpm
kernel-module-r1000-2.6.9-55.0.12.ELxenU-2.2-2.SL4x.x86_64.rpm

NOTE: At the time of this writting, The Upstream Vendor had not released the 
source rpm's for the GFS kernel modules.  When they do, we will recompile them 
and push them out.  But we felt it was better to get the kernel out as soon as 
possible.

-Connie Sieh
-Troy Dawson

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