From: Dan Carpenter <error27@gmail.com>
To: Jamal Hadi Salim <jhs@mojatatu.com>, Kees Cook <keescook@chromium.org>
Cc: Cong Wang <xiyou.wangcong@gmail.com>,
Jiri Pirko <jiri@resnulli.us>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <simon.horman@corigine.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net-next] net: sched: sch: Fix off by one in htb_activate_prios()
Date: Mon, 6 Feb 2023 16:18:32 +0300 [thread overview]
Message-ID: <Y+D+KN18FQI2DKLq@kili> (raw)
The > needs be >= to prevent an out of bounds access.
Fixes: de5ca4c3852f ("net: sched: sch: Bounds check priority")
Signed-off-by: Dan Carpenter <error27@gmail.com>
---
net/sched/sch_htb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index cc28e41fb745..92f2975b6a82 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -433,7 +433,7 @@ 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);
--
2.35.1
next reply other threads:[~2023-02-06 14:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-06 13:18 Dan Carpenter [this message]
2023-02-06 14:15 ` [PATCH net-next] net: sched: sch: Fix off by one in htb_activate_prios() Simon Horman
2023-02-06 18:39 ` Kees Cook
2023-02-08 4:16 ` Jakub Kicinski
2023-02-08 6:18 ` Dan Carpenter
2023-02-08 7:50 ` patchwork-bot+netdevbpf
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