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

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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.

Signed-off-by: dean gaudet <dean@arctic.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
dean gaudet 2006-04-27 18:39:17 -07:00 committed by Linus Torvalds
parent 37e53db8aa
commit 47bb789973
1 changed files with 1 additions and 1 deletions
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2
kernel/power/main.c
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@ -272,7 +272,7 @@ static ssize_t state_store(struct subsystem * subsys, const char * buf, size_t n
if (*s && !strncmp(buf, *s, len))
break;
}
if (*s)
if (state < PM_SUSPEND_MAX && *s)
error = enter_state(state);
else
error = -EINVAL;