[SRU][Trusty][PATCH 0/1] Fix for CVE-2017-18270

[Kleber Sacilotto de Souza]

https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-18270.html

Backport needed for Trusty mainly to adjust for context.

Tested with the reproducer from the commit message.

Eric Biggers (1):
  KEYS: prevent creating a different user's keyrings

 include/linux/key.h          |  2 ++
 security/keys/internal.h     |  2 +-
 security/keys/key.c          |  2 ++
 security/keys/keyring.c      | 23 ++++++++++++++---------
 security/keys/process_keys.c |  8 ++++++--
 5 files changed, 25 insertions(+), 12 deletions(-)

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2.17.1