ubports_kernel_google_msm

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Kees Cook 49b9d3f279 Yama: higher restrictions should block PTRACE_TRACEME

The higher ptrace restriction levels should be blocking even
PTRACE_TRACEME requests. The comments in the LSM documentation are
misleading about when the checks happen (the parent does not go through
security_ptrace_access_check() on a PTRACE_TRACEME call).

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # 3.5.x and later
Signed-off-by: James Morris <james.l.morris@oracle.com>

(cherry picked from 9d8dad742ad1c74d7e7210ee05d0b44961d5ea16)
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>

2014-02-06 13:56:37 +00:00