linux-2.6 - several vulnerabilities

NOTE: This kernel update marks the final planned kernel security update for
the 2.6.18 kernel in the Debian release ‘etch’. Although security support for
‘etch’ officially ended on Feburary 15th, 2010, this update was already in
preparation before that date. A final update that includes fixes for these
issues in the 2.6.24 kernel is also in preparation and will be released
shortly.

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

• CVE-2009-3080
  Dave Jones reported an issue in the gdth SCSI driver. A missing
  check for negative offsets in an ioctl call could be exploited by
  local users to create a denial of service or potentially gain
  elevated privileges.
• CVE-2009-3726
  Trond Myklebust reported an issue where a malicious NFS server
  could cause a denial of service condition on its clients by
  returning incorrect attributes during an open call.
• CVE-2009-4005
  Roel Kluin discovered an issue in the hfc_usb driver, an ISDN
  driver for Colognechip HFC-S USB chip. A potential read overflow
  exists which may allow remote users to cause a denial of service
  condition (oops).
• CVE-2009-4020
  Amerigo Wang discovered an issue in the HFS filesystem that would
  allow a denial of service by a local user who has sufficient
  privileges to mount a specially crafted filesystem.
• CVE-2009-4021
  Anana V. Avati discovered an issue in the fuse subsystem. If the
  system is sufficiently low on memory, a local user can cause the
  kernel to dereference an invalid pointer resulting in a denial of
  service (oops) and potentially an escalation of privileges.
• CVE-2009-4536
  Fabian Yamaguchi reported an issue in the e1000 driver for Intel
  gigabit network adapters which allow remote users to bypass packet
  filters using specially crafted ethernet frames.
• CVE-2010-0007
  Florian Westphal reported a lack of capability checking in the
  ebtables netfilter subsystem. If the ebtables module is loaded,
  local users can add and modify ebtables rules.
• CVE-2010-0410
  Sebastian Krahmer discovered an issue in the netlink connector
  subsystem that permits local users to allocate large amounts of
  system memory resulting in a denial of service (out of memory).
• CVE-2010-0415
  Ramon de Carvalho Valle discovered an issue in the sys_move_pages
  interface, limited to amd64, ia64 and powerpc64 flavors in Debian.
  Local users can exploit this issue to cause a denial of service
  (system crash) or gain access to sensitive kernel memory.
• CVE-2010-0622
  Jerome Marchand reported an issue in the futex subsystem that
  allows a local user to force an invalid futex state which results
  in a denial of service (oops).

This update also fixes a regression introduced by a previous security
update that caused problems booting on certain s390 systems.

For the oldstable distribution (etch), this problem has been fixed in
version 2.6.18.dfsg.1-26etch2.

We recommend that you upgrade your linux-2.6, fai-kernels, and
user-mode-linux packages.

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