Security fixes for 2.6.32-stable

Willy, here are the security patches I've recently applied to Debian's
2.6.32 branch, aside from "pipe: iovec: Fix memory corruption when
retrying atomic copy as non-atomic" which I sent earlier.

All except the last one ("udp: fix behavior of wrong checksums") have
already been released without reported regressions. The mapping to CVE
IDs is:

  * TTY: drop driver reference in tty_open fail path (CVE-2011-5321)
  * netlink: fix possible spoofing from non-root processes (CVE-2012-6689)
  * eCryptfs: Remove buggy and unnecessary write in file name decode routine
    (CVE-2014-9683)
  * HID: fix a couple of off-by-ones (CVE-2014-3184)
  * udf: Verify i_size when loading inode (CVE-2014-9728, CVE-2014-9729)
  * udf: Verify symlink size before loading it (CVE-2014-9728)
  * udf: Treat symlink component of type 2 as / (dependency of following fix)
  * udf: Check path length when reading symlink (CVE-2014-9731)
  * udf: Check component length before reading it
    (CVE-2014-9728, CVE-2014-9730)
  * udf: Remove repeated loads blocksize (dependency of following fix)
  * udf: Check length of extended attributes and allocation descriptors
    (CVE-2015-4167)
  * udp: fix behavior of wrong checksums (CVE-2015-5364)

Ben.

-- 
Ben Hutchings
Every program is either trivial or else contains at least one bug