kernel-source-2.6.8 - several

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-2004-2302
  A race condition in the sysfs filesystem allows local users to
  read kernel memory and cause a denial of service (crash).

• CVE-2005-0756
  Alexander Nyberg discovered that the ptrace() system call does not
  properly verify addresses on the amd64 architecture which can be
  exploited by a local attacker to crash the kernel.

• CVE-2005-0757
  A problem in the offset handling in the xattr file system code for
  ext3 has been discovered that may allow users on 64-bit systems
  that have access to an ext3 filesystem with extended attributes to
  cause the kernel to crash.

• CVE-2005-1265
  Chris Wright discovered that the mmap() function could create
  illegal memory maps that could be exploited by a local user to
  crash the kernel or potentially execute arbitrary code.

• CVE-2005-1761
  A vulnerability on the IA-64 architecture can lead local attackers
  to overwrite kernel memory and crash the kernel.

• CVE-2005-1762
  A vulnerability has been discovered in the ptrace() system call on
  the amd64 architecture that allows a local attacker to cause the
  kernel to crash.

• CVE-2005-1763
  A buffer overflow in the ptrace system call for 64-bit
  architectures allows local users to write bytes into arbitrary
  kernel memory.

• CVE-2005-1765
  Zou Nan Hai has discovered that a local user could cause the
  kernel to hang on the amd64 architecture after invoking syscall()
  with specially crafted arguments.

• CVE-2005-1767
  A vulnerability has been discovered in the stack segment fault
  handler that could allow a local attacker to cause a stack exception
  that will lead the kernel to crash under certain circumstances.

• CVE-2005-2456
  Balazs Scheidler discovered that a local attacker could call
  setsockopt() with an invalid xfrm_user policy message which would
  cause the kernel to write beyond the boundaries of an array and
  crash.

• CVE-2005-2458
  Vladimir Volovich discovered a bug in the zlib routines which are
  also present in the Linux kernel and allows remote attackers to
  crash the kernel.

• CVE-2005-2459
  Another vulnerability has been discovered in the zlib routines
  which are also present in the Linux kernel and allows remote
  attackers to crash the kernel.

• CVE-2005-2548
  Peter Sandstrom noticed that snmpwalk from a remote host could
  cause a denial of service (kernel oops from null dereference) via
  certain UDP packets that lead to a function call with the wrong
  argument.

• CVE-2005-2801
  Andreas Gruenbacher discovered a bug in the ext2 and ext3 file
  systems. When data areas are to be shared among two inodes not
  all information were compared for equality, which could expose
  wrong ACLs for files.

• CVE-2005-2872
  Chad Walstrom discovered that the ipt_recent kernel module on
  64-bit processors such as AMD64 allows remote attackers to cause a
  denial of service (kernel panic) via certain attacks such as SSH
  brute force.

• CVE-2005-3105
  The mprotect code on Itanium IA-64 Montecito processors does not
  properly maintain cache coherency as required by the architecture,
  which allows local users to cause a denial of service and possibly
  corrupt data by modifying PTE protections.

• CVE-2005-3106
  A race condition in the thread management may allow local users to
  cause a denial of service (deadlock) when threads are sharing
  memory and waiting for a thread that has just performed an exec.

• CVE-2005-3107
  When one thread is tracing another thread that shares the same
  memory map a local user could cause a denial of service (deadlock)
  by forcing a core dump when the traced thread is in the
  TASK_TRACED state.

• CVE-2005-3108
  A bug in the ioremap() system call has been discovered on the
  amd64 architecture that could allow local users to cause a
  denial of service or an information leak when performing a lookup
  of a non-existent memory page.

• CVE-2005-3109
  The HFS and HFS+ (hfsplus) modules allow local attackers to cause
  a denial of service (oops) by using hfsplus to mount a filesystem
  that is not hfsplus.

• CVE-2005-3110
  A race condition in the ebtables netfilter module on an SMP system
  running under high load may allow remote attackers to cause a
  denial of service (crash).

• CVE-2005-3271
  Roland McGrath discovered that exec() does not properly clear
  posix-timers in multi-threaded environments, which results in a
  resource leak and could allow a large number of multiple local
  users to cause a denial of service by using more posix-timers than
  specified by the quota for a single user.

• CVE-2005-3272
  The kernel allows remote attackers to poison the bridge forwarding
  table using frames that have already been dropped by filtering,
  which can cause the bridge to forward spoofed packets.

• CVE-2005-3273
  The ioctl for the packet radio ROSE protocol does not properly
  verify the arguments when setting a new router, which allows
  attackers to trigger out-of-bounds errors.

• CVE-2005-3274
  A race condition on SMP systems allows local users to cause a
  denial of service (null dereference) by causing a connection timer
  to expire while the connection table is being flushed before the
  appropriate lock is acquired.

• CVE-2005-3275
  An error in the NAT code allows remote attackers to cause a denial
  of service (memory corruption) by causing two packets for the same
  protocol to be NATed at the same time, which leads to memory
  corruption.

• CVE-2005-3276
  A missing memory cleanup in the thread handling routines before
  copying data into userspace allows a user process to obtain
  sensitive information.

This update also contains a number of corrections for issues that
turned out to have no security implication afterwards.

The following matrix explains which kernel version for which architecture
fix the problems mentioned above:

We recommend that you upgrade your kernel package immediately and
reboot the machine.