seccomp: Use PR_SPEC_FORCE_DISABLE

commit b849a812f7eb92e96d1c8239b06581b2cfd8b275 upstream

Use PR_SPEC_FORCE_DISABLE in seccomp() because seccomp does not allow to
widen restrictions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 55f20ae..6f22d9d 100644 (file)
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -239,7 +239,7 @@ static inline void spec_mitigate(struct task_struct *task,
        int state = arch_prctl_spec_ctrl_get(task, which);
 
        if (state > 0 && (state & PR_SPEC_PRCTL))
-               arch_prctl_spec_ctrl_set(task, which, PR_SPEC_DISABLE);
+               arch_prctl_spec_ctrl_set(task, which, PR_SPEC_FORCE_DISABLE);
 }
 
 static inline void seccomp_assign_mode(struct task_struct *task,