[PATCH] off-by-1 in kernel/power/main.c

There's an off-by-1 in kernel/power/main.c:state_store() ... if your kernel just happens to have some non-zero data at pm_states[PM_SUSPEND_MAX] (i.e. one past the end of the array) then it'll let you write anything you want to /sys/power/state and in response the box will enter S5.

dean gaudet committed 20 years ago

Commit 47bb7891 parent 37e53db1 file · +1 −1Browse files

Unified · Split

kernel/power/main.c+1−1

@@ -272,7 +272,7 @@ static ssize_t state_store(struct subsystem * subsys, const char * buf, size_t n · 271 unmodified lines
272	if (s && !strncmp(buf, s, len))	272	if (s && !strncmp(buf, s, len))
273	break;	273	break;
274	}	274	}
275	if (*s)	275	if (state < PM_SUSPEND_MAX && *s)
276	error = enter_state(state);	276	error = enter_state(state);
277	else	277	else
278	error = -EINVAL;	278	error = -EINVAL;