diff options
| author | Randy Dunlap <rdunlap@infradead.org> | 2020-12-25 09:23:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 22:09:09 +0300 |
| commit | 7e6953fa83a67b907a5a1fc8796b45aa2807cdeb (patch) | |
| tree | 0a95a1ea1636f7579e73ebb75429415829f8d282 /net/sched | |
| parent | da35ba33e1261de495ff05af89e96f78d8492483 (diff) | |
| download | linux-7e6953fa83a67b907a5a1fc8796b45aa2807cdeb.tar.xz | |
net: sched: prevent invalid Scell_log shift count
[ Upstream commit bd1248f1ddbc48b0c30565fce897a3b6423313b8 ]
Check Scell_log shift size in red_check_params() and modify all callers
of red_check_params() to pass Scell_log.
This prevents a shift out-of-bounds as detected by UBSAN:
UBSAN: shift-out-of-bounds in ./include/net/red.h:252:22
shift exponent 72 is too large for 32-bit type 'int'
Fixes: 8afa10cbe281 ("net_sched: red: Avoid illegal values")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: syzbot+97c5bd9cc81eca63d36e@syzkaller.appspotmail.com
Cc: Nogah Frankel <nogahf@mellanox.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_choke.c | 2 | ||||
| -rw-r--r-- | net/sched/sch_gred.c | 2 | ||||
| -rw-r--r-- | net/sched/sch_red.c | 2 | ||||
| -rw-r--r-- | net/sched/sch_sfq.c | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c index 5a98618b47e8..777475f7f29c 100644 --- a/net/sched/sch_choke.c +++ b/net/sched/sch_choke.c @@ -370,7 +370,7 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt) ctl = nla_data(tb[TCA_CHOKE_PARMS]); - if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) return -EINVAL; if (ctl->limit > CHOKE_MAX_QUEUE) diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c index d3105ee8decf..357dec26f2fd 100644 --- a/net/sched/sch_gred.c +++ b/net/sched/sch_gred.c @@ -356,7 +356,7 @@ static inline int gred_change_vq(struct Qdisc *sch, int dp, struct gred_sched *table = qdisc_priv(sch); struct gred_sched_data *q = table->tab[dp]; - if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) return -EINVAL; if (!q) { diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index c453b8d81c9e..6e6397bda49b 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -184,7 +184,7 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt) max_P = tb[TCA_RED_MAX_P] ? nla_get_u32(tb[TCA_RED_MAX_P]) : 0; ctl = nla_data(tb[TCA_RED_PARMS]); - if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) return -EINVAL; if (ctl->limit > 0) { diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 1eae4de319b3..2104fe7267e1 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -649,7 +649,7 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt) } if (ctl_v1 && !red_check_params(ctl_v1->qth_min, ctl_v1->qth_max, - ctl_v1->Wlog)) + ctl_v1->Wlog, ctl_v1->Scell_log)) return -EINVAL; if (ctl_v1 && ctl_v1->qth_min) { p = kmalloc(sizeof(*p), GFP_KERNEL); |