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authorKees Cook <keescook@chromium.org>2012-08-09 19:01:26 -0700
committerJames Morris <james.l.morris@oracle.com>2012-08-10 19:58:07 +1000
commit9d8dad742ad1c74d7e7210ee05d0b44961d5ea16 (patch)
treeb1e738bf17987552cdace2695d8b77328dc29bcf /include
parentf4ba394c1b02e7fc2179fda8d3941a5b3b65efb6 (diff)
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/security.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 4e5a73cdbbef..3dea6a9d568f 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1242,8 +1242,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* Check that the @parent process has sufficient permission to trace the
* current process before allowing the current process to present itself
* to the @parent process for tracing.
- * The parent process will still have to undergo the ptrace_access_check
- * checks before it is allowed to trace this one.
* @parent contains the task_struct structure for debugger process.
* Return 0 if permission is granted.
* @capget: