apparmor: fix capability to not use the current task, during reporting

Mediation is based off of the cred but auditing includes the current
task which may not be related to the actual request.

Signed-off-by: John Johansen <john.johansen@canonical.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/security/apparmor/ipc.c b/security/apparmor/ipc.c
index c51d2266587e..777ac1c47253 100644
--- a/security/apparmor/ipc.c
+++ b/security/apparmor/ipc.c
@@ -54,15 +54,14 @@ static int aa_audit_ptrace(struct aa_profile *profile,
 
 /**
  * aa_may_ptrace - test if tracer task can trace the tracee
- * @tracer_task: task who will do the tracing  (NOT NULL)
  * @tracer: profile of the task doing the tracing  (NOT NULL)
  * @tracee: task to be traced
  * @mode: whether PTRACE_MODE_READ || PTRACE_MODE_ATTACH
  *
  * Returns: %0 else error code if permission denied or error
  */
-int aa_may_ptrace(struct task_struct *tracer_task, struct aa_profile *tracer,
-                  struct aa_profile *tracee, unsigned int mode)
+int aa_may_ptrace(struct aa_profile *tracer, struct aa_profile *tracee,
+                  unsigned int mode)
 {
         /* TODO: currently only based on capability, not extended ptrace
          *       rules,
@@ -72,7 +71,7 @@ int aa_may_ptrace(struct task_struct *tracer_task, struct aa_profile *tracer,
         if (unconfined(tracer) || tracer == tracee)
                 return 0;
         /* log this capability request */
-        return aa_capable(tracer_task, tracer, CAP_SYS_PTRACE, 1);
+        return aa_capable(tracer, CAP_SYS_PTRACE, 1);
 }
 
 /**
@@ -101,7 +100,7 @@ int aa_ptrace(struct task_struct *tracer, struct task_struct *tracee,
         if (!unconfined(tracer_p)) {
                 struct aa_profile *tracee_p = aa_get_task_profile(tracee);
 
-                error = aa_may_ptrace(tracer, tracer_p, tracee_p, mode);
+                error = aa_may_ptrace(tracer_p, tracee_p, mode);
                 error = aa_audit_ptrace(tracer_p, tracee_p, error);
 
                 aa_put_profile(tracee_p);