linux-2.6.24 - several vulnerabilities

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service, sensitive memory leak or privilege
escalation. The Common Vulnerabilities and Exposures project
identifies the following problems:

• CVE-2009-2846
  Michael Buesch noticed a typing issue in the eisa-eeprom driver
  for the hppa architecture. Local users could exploit this issue to
  gain access to restricted memory.

• CVE-2009-2847
  Ulrich Drepper noticed an issue in the do_sigalstack routine on
  64-bit systems. This issue allows local users to gain access to
  potentially sensitive memory on the kernel stack.

• CVE-2009-2848
  Eric Dumazet discovered an issue in the execve path, where the
  clear_child_tid variable was not being properly cleared. Local
  users could exploit this issue to cause a denial of service
  (memory corruption).

• CVE-2009-2849
  Neil Brown discovered an issue in the sysfs interface to md
  devices. When md arrays are not active, local users can exploit
  this vulnerability to cause a denial of service (oops).

• CVE-2009-2903
  Mark Smith discovered a memory leak in the appletalk
  implementation. When the appletalk and ipddp modules are loaded,
  but no ipddp"N" device is found, remote attackers can cause a
  denial of service by consuming large amounts of system memory.

• CVE-2009-2908
  Loic Minier discovered an issue in the eCryptfs filesystem. A
  local user can cause a denial of service (kernel oops) by causing
  a dentry value to go negative.

• CVE-2009-2909
  Arjan van de Ven discovered an issue in the AX.25 protocol
  implementation. A specially crafted call to setsockopt() can
  result in a denial of service (kernel oops).

• CVE-2009-2910
  Jan Beulich discovered the existence of a sensitive kernel memory
  leak. Systems running the ‘amd64’ kernel do not properly sanitize
  registers for 32-bit processes.

• CVE-2009-3001
  Jiri Slaby fixed a sensitive memory leak issue in the ANSI/IEEE
  802.2 LLC implementation. This is not exploitable in the Debian
  lenny kernel as root privileges are required to exploit this
  issue.

• CVE-2009-3002
  Eric Dumazet fixed several sensitive memory leaks in the IrDA,
  X.25 PLP (Rose), NET/ROM, Acorn Econet/AUN, and Controller Area
  Network (CAN) implementations. Local users can exploit these
  issues to gain access to kernel memory.

• CVE-2009-3228
  Eric Dumazet reported an instance of uninitialized kernel memory
  in the network packet scheduler. Local users may be able to
  exploit this issue to read the contents of sensitive kernel
  memory.

• CVE-2009-3238
  Linus Torvalds provided a change to the get_random_int() function
  to increase its randomness.

• CVE-2009-3286
  Eric Paris discovered an issue with the NFSv4 server
  implementation. When an O_EXCL create fails, files may be left
  with corrupted permissions, possibly granting unintentional
  privileges to other local users.

• CVE-2009-3547
  Earl Chew discovered a NULL pointer dereference issue in the
  pipe_rdwr_open function which can be used by local users to gain
  elevated privileges.

• CVE-2009-3612
  Jiri Pirko discovered a typo in the initialization of a structure
  in the netlink subsystem that may allow local users to gain access
  to sensitive kernel memory.

• CVE-2009-3613
  Alistair Strachan reported an issue in the r8169 driver. Remote
  users can cause a denial of service (IOMMU space exhaustion and
  system crash) by transmitting a large amount of jumbo frames.

• CVE-2009-3620
  Ben Hutchings discovered an issue in the DRM manager for ATI Rage
  128 graphics adapters. Local users may be able to exploit this
  vulnerability to cause a denial of service (NULL pointer
  dereference).

• CVE-2009-3621
  Tomoki Sekiyama discovered a deadlock condition in the UNIX domain
  socket implementation. Local users can exploit this vulnerability
  to cause a denial of service (system hang).

For the oldstable distribution (etch), this problem has been fixed in
version 2.6.24-6~etchnhalf.9etch1.

We recommend that you upgrade your linux-2.6.24 packages.

Note: Debian ‘etch’ includes linux kernel packages based upon both the
2.6.18 and 2.6.24 linux releases. All known security issues are
carefully tracked against both packages and both packages will receive
security updates until security support for Debian ‘etch’
concludes. However, given the high frequency at which low-severity
security issues are discovered in the kernel and the resource
requirements of doing an update, lower severity 2.6.18 and 2.6.24
updates will typically release in a staggered or “leap-frog” fashion.