kernel-image-2.6.8 - several issues

Several local and remote vulnerabilities have been discovered in the Linux
kernel that may lead to a denial of service or the execution of arbitrary
code. The Common Vulnerabilities and Exposures project identifies the
following problems:

• CVE-2006-5823
  LMH reported a potential local DoS which could be exploited by a malicious
  user with the privileges to mount and read a corrupted cramfs filesystem.
• CVE-2006-6054
  LMH reported a potential local DoS which could be exploited by a malicious
  user with the privileges to mount and read a corrupted ext2 filesystem.
• CVE-2006-6058
  LMH reported an issue in the minix filesystem that allows local users
  with mount privileges to create a DoS (printk flood) by mounting a
  specially crafted corrupt filesystem.
• CVE-2006-7203
  OpenVZ Linux kernel team reported an issue in the smbfs filesystem which
  can be exploited by local users to cause a DoS (oops) during mount.
• CVE-2007-1353
  Ilja van Sprundel discovered that kernel memory could be leaked via the
  Bluetooth setsockopt call due to an uninitialized stack buffer. This
  could be used by local attackers to read the contents of sensitive kernel
  memory.
• CVE-2007-2172
  Thomas Graf reported a typo in the DECnet protocol handler that could
  be used by a local attacker to overrun an array via crafted packets,
  potentially resulting in a Denial of Service (system crash).
  A similar issue exists in the IPV4 protocol handler and will be fixed
  in a subsequent update.
• CVE-2007-2525
  Florian Zumbiehl discovered a memory leak in the PPPOE subsystem caused
  by releasing a socket before PPPIOCGCHAN is called upon it. This could
  be used by a local user to DoS a system by consuming all available memory.
• CVE-2007-3105
  The PaX Team discovered a potential buffer overflow in the random number
  generator which may permit local users to cause a denial of service or
  gain additional privileges. This issue is not believed to effect default
  Debian installations where only root has sufficient privileges to exploit
  it.
• CVE-2007-3739
  Adam Litke reported a potential local denial of service (oops) on
  powerpc platforms resulting from unchecked VMA expansion into address
  space reserved for hugetlb pages.
• CVE-2007-3740
  Steve French reported that CIFS filesystems with CAP_UNIX enabled
  were not honoring a process’ umask which may lead to unintentionally
  relaxed permissions.
• CVE-2007-3848
  Wojciech Purczynski discovered that pdeath_signal was not being reset
  properly under certain conditions which may allow local users to gain
  privileges by sending arbitrary signals to suid binaries.
• CVE-2007-4133
  Hugh Dickins discovered a potential local DoS (panic) in hugetlbfs.
  A misconversion of hugetlb_vmtruncate_list to prio_tree may allow
  local users to trigger a BUG_ON() call in exit_mmap.
• CVE-2007-4308
  Alan Cox reported an issue in the aacraid driver that allows unprivileged
  local users to make ioctl calls which should be restricted to admin
  privileges.
• CVE-2007-4573
  Wojciech Purczynski discovered a vulnerability that can be exploited
  by a local user to obtain superuser privileges on x86_64 systems.
  This resulted from improper clearing of the high bits of registers
  during ia32 system call emulation. This vulnerability is relevant
  to the Debian amd64 port as well as users of the i386 port who run
  the amd64 linux-image flavour.
• CVE-2007-5093
  Alex Smith discovered an issue with the pwc driver for certain webcam
  devices. If the device is removed while a userspace application has it
  open, the driver will wait for userspace to close the device, resulting
  in a blocked USB subsystem. This issue is of low security impact as
  it requires the attacker to either have physical access to the system
  or to convince a user with local access to remove the device on their
  behalf.
• CVE-2007-6063
  Venustech AD-LAB discovered a a buffer overflow in the isdn ioctl
  handling, exploitable by a local user.
• CVE-2007-6151
  ADLAB discovered a possible memory overrun in the ISDN subsystem that
  may permit a local user to overwrite kernel memory by issuing
  ioctls with unterminated data.
• CVE-2007-6206
  Blake Frantz discovered that when a core file owned by a non-root user
  exists, and a root-owned process dumps core over it, the core file
  retains its original ownership. This could be used by a local user to
  gain access to sensitive information.
• CVE-2007-6694
  Cyrill Gorcunov reported a NULL pointer dereference in code specific
  to the CHRP PowerPC platforms. Local users could exploit this issue
  to achieve a Denial of Service (DoS).
• CVE-2008-0007
  Nick Piggin of SuSE discovered a number of issues in subsystems which
  register a fault handler for memory mapped areas. This issue can be
  exploited by local users to achieve a Denial of Service (DoS) and possibly
  execute arbitrary code.

The following matrix lists additional packages that were rebuilt for
compatibility with or to take advantage of this update:

We recommend that you upgrade your kernel package immediately and reboot
the machine. If you have built a custom kernel from the kernel source
package, you will need to rebuild to take advantage of these fixes.