Git -- Fix memory out-of-bounds and remote code execution vulnerabilities (CVE-2018-11233 and CVE-2018-11235)

The Git community reports:

In affected versions of Git, code to sanity-check pathnames on
NTFS can result in reading out-of-bounds memory.
In affected versions of Git, remote code execution can
occur. With a crafted .gitmodules file, a malicious project can
execute an arbitrary script on a machine that runs “git clone
–recurse-submodules” because submodule “names” are obtained from
this file, and then appended to $GIT_DIR/modules, leading to
directory traversal with “…/” in a name. Finally, post-checkout
hooks from a submodule are executed, bypassing the intended design
in which hooks are not obtained from a remote server.