[PATCH 0/2] [SRU][Trusty] Fix for CVE-2018-1093

[Paolo Pisati]

https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-1093.html

The first patch is a prerequisite, while the second patch contains the actual
fix.
Both clean cherry pick - in the second patch i had to substitute the returned
error from EFSCORRUPTED to EIO since the former doesn't exist in Trusty.

Darrick J. Wong (1):
  ext4: fix block bitmap validation when bigalloc, ^flex_bg

Theodore Ts'o (1):
  ext4: add validity checks for bitmap block numbers

 fs/ext4/balloc.c | 24 +++++++++++++++++++-----
 fs/ext4/ialloc.c |  7 +++++++
 2 files changed, 26 insertions(+), 5 deletions(-)

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2.7.4