[El-errata] ELSA-2012-2008 Moderate: Oracle Linux 6 Unbreakable Enterprise kernel security and bug fix update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2012-2008

The following updated rpms for Oracle Linux 6 have been uploaded to the 
Unbreakable Linux Network:

i386:
kernel-uek-2.6.39-100.6.1.el6uek.i686.rpm
kernel-uek-debug-2.6.39-100.6.1.el6uek.i686.rpm
kernel-uek-debug-devel-2.6.39-100.6.1.el6uek.i686.rpm
kernel-uek-devel-2.6.39-100.6.1.el6uek.i686.rpm
kernel-uek-doc-2.6.39-100.6.1.el6uek.noarch.rpm
kernel-uek-firmware-2.6.39-100.6.1.el6uek.noarch.rpm

x86_64:
kernel-uek-firmware-2.6.39-100.6.1.el6uek.noarch.rpm
kernel-uek-doc-2.6.39-100.6.1.el6uek.noarch.rpm
kernel-uek-2.6.39-100.6.1.el6uek.x86_64.rpm
kernel-uek-devel-2.6.39-100.6.1.el6uek.x86_64.rpm
kernel-uek-debug-devel-2.6.39-100.6.1.el6uek.x86_64.rpm
kernel-uek-debug-2.6.39-100.6.1.el6uek.x86_64.rpm


SRPMS:
http://oss.oracle.com/ol6/SRPMS-updates/kernel-uek-2.6.39-100.6.1.el6uek.src.rpm

Users with Oracle Linux Premier Support can now use Ksplice to patch
against this Security Advisory.

We recommend that all users of  Oracle Linux 6 install these updates.

Users of Ksplice Uptrack can install these updates by running :

# /usr/sbin/uptrack-upgrade -y
On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any additional action.


Description of changes:

* CVE-2012-1090: Denial of service in the CIFS filesystem reference 
counting.

Under certain circumstances, the CIFS filesystem would open a file on
lookup. If the file was determined later to be a FIFO or any other
special file the file handle would be leaked, leading to reference
counting mismatch and a kernel OOPS on unmount.

An unprivileged local user could use this flaw to crash the system.


* CVE-2012-1097: NULL pointer dereference in the ptrace subsystem.

Under certain circumstances, ptrace-ing a process could lead to a NULL
pointer dereference and kernel panic.

kernel-uek:

[2.6.39-100.6.1.el6uek]
- regset: Return -EFAULT, not -EIO, on host-side memory fault (H. Peter 
Anvin)
   {CVE-2012-1097}
- regset: Prevent null pointer reference on readonly regsets (H. Peter 
Anvin)
   {CVE-2012-1097}
- cifs: fix dentry refcount leak when opening a FIFO on lookup (Jeff Layton)
   {CVE-2012-1090}