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net: sched: sch: Fix off by one in htb_activate_prios()

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commit 9cec2aaffe upstream.

The > needs be >= to prevent an out of bounds access.

Fixes: de5ca4c385 ("net: sched: sch: Bounds check priority")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/Y+D+KN18FQI2DKLq@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2023-02-06 16:18:32 +03:00 committed by Greg Kroah-Hartman
parent 5660a6ffa7
commit 7519069f1f
1 changed files with 1 additions and 1 deletions
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2
net/sched/sch_htb.c
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@ -407,7 +407,7 @@ static void htb_activate_prios(struct htb_sched *q, struct htb_class *cl)
while (m) {
unsigned int prio = ffz(~m);
if (WARN_ON_ONCE(prio > ARRAY_SIZE(p->inner.clprio)))
if (WARN_ON_ONCE(prio >= ARRAY_SIZE(p->inner.clprio)))
break;
m &= ~(1 << prio);