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linux/net/sched
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Cong Wang 93e794d4fe net_sched: reject TCF_EM_SIMPLE case for complex ematch module 
[ Upstream commit 9cd3fd2054 ]

When TCF_EM_SIMPLE was introduced, it is supposed to be convenient
for ematch implementation:

https://lore.kernel.org/all/20050105110048.GO26856@postel.suug.ch/

"You don't have to, providing a 32bit data chunk without TCF_EM_SIMPLE
set will simply result in allocating & copy. It's an optimization,
nothing more."

So if an ematch module provides ops->datalen that means it wants a
complex data structure (saved in its em->data) instead of a simple u32
value. We should simply reject such a combination, otherwise this u32
could be misinterpreted as a pointer.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-and-tested-by: syzbot+4caeae4c7103813598ae@syzkaller.appspotmail.com
Reported-by: Jun Nie <jun.nie@linaro.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-18 11:41:33 +01:00
..
act_api.c
net/sched: act_api: Notify user space if any actions were flushed before error
2022-07-07 17:36:50 +02:00
act_bpf.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_connmark.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_csum.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_ct.c
net/sched: act_ct: fix err check for nf_conntrack_confirm
2021-07-25 14:35:14 +02:00
act_ctinfo.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_gact.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_ife.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_ipt.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_meta_mark.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbprio.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbtcindex.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_mirred.c
net: sched: act_mirred: drop dst for the direction from egress to ingress
2021-11-26 10:47:19 +01:00
act_mpls.c
net/sched: act_mpls: ensure LSE is pullable before reading it
2020-12-08 10:40:27 +01:00
act_nat.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_pedit.c
net/sched: act_pedit: sanitize shift argument before usage
2022-05-25 09:14:35 +02:00
act_police.c
net/sched: act_police: more accurate MTU policing
2022-06-22 14:11:24 +02:00
act_sample.c
net: sched: lock action when translating it to flow_action infra
2021-12-22 09:29:37 +01:00
act_simple.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_skbedit.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-10-14 10:33:06 +02:00
act_skbmod.c
net/sched: act_skbmod: Skip non-Ethernet packets
2021-07-28 13:30:57 +02:00
act_tunnel_key.c
net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels
2020-10-29 09:57:26 +01:00
act_vlan.c
net/sched: act_vlan: Fix modify to allow 0
2021-07-14 16:53:27 +02:00
cls_api.c
net: sched: fix possible refcount leak in tc_new_tfilter()
2022-09-28 11:04:07 +02:00
cls_basic.c
net_sched: fix ops->bind_class() implementations
2020-02-01 09:34:38 +00:00
cls_bpf.c
net_sched: fix ops->bind_class() implementations
2020-02-01 09:34:38 +00:00
cls_cgroup.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_flow.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-22 09:32:48 +02:00
cls_flower.c
net/sched: flower: fix parsing of ethertype following VLAN header
2022-04-20 09:19:34 +02:00
cls_fw.c
net_sched: fix ops->bind_class() implementations
2020-02-01 09:34:38 +00:00
cls_matchall.c
net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
2020-02-24 08:36:22 +01:00
cls_route.c
net_sched: cls_route: disallow handle of 0
2022-08-25 11:18:18 +02:00
cls_rsvp6.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.h
cls_rsvp: fix rsvp_policy
2020-02-11 04:35:03 -08:00
cls_tcindex.c
net: sched: fix memory leak in tcindex_partial_destroy_work
2021-07-28 13:30:56 +02:00
cls_u32.c
net/sched: cls_u32: fix possible leak in u32_init_knode()
2022-04-27 13:50:47 +02:00
em_canid.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 11
2019-05-21 11:28:45 +02:00
em_cmp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_ipset.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-22 09:32:48 +02:00
em_ipt.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-22 09:32:48 +02:00
em_meta.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-22 09:32:48 +02:00
em_nbyte.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_text.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_u32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ematch.c
net_sched: reject TCF_EM_SIMPLE case for complex ematch module
2023-01-18 11:41:33 +01:00
Kconfig
net/sched: Set default of CONFIG_NET_TC_SKB_EXT to N
2019-09-27 20:08:28 +02:00
Makefile
net/sched: Introduce action ct
2019-07-09 12:11:59 -07:00
sch_api.c
net: sched: Clarify error message when qdisc kind is unknown
2022-02-16 12:52:48 +01:00
sch_atm.c
net_sched: fix a memory leak in atm_tc_init()
2020-07-22 09:32:48 +02:00
sch_blackhole.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_cake.c
net: sched: cake: fix null pointer access issue when cake_init() fails
2022-10-29 10:20:35 +02:00
sch_cbq.c
net: sched: Fix qdisc_rate_table refcount leak when get tcf_block failed
2021-09-15 09:47:38 +02:00
sch_cbs.c
net: cbs: Fix software cbs to consider packet sending time
2020-04-01 11:01:33 +02:00
sch_choke.c
net: sched: validate stab values
2021-03-30 14:35:25 +02:00
sch_codel.c
net: sched: Fix a possible null-pointer dereference in dequeue_func()
2019-07-29 09:46:58 -07:00
sch_drr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
sch_dsmark.c
sch_dsmark: fix a NULL deref in qdisc_reset()
2021-06-03 08:59:15 +02:00
sch_etf.c
sched: etf: do not assume all sockets are full blown
2020-04-29 16:33:09 +02:00
sch_fifo.c
net_sched: fix NULL deref in fifo_set_limit()
2021-10-13 10:08:18 +02:00
sch_fq_codel.c
fq_codel: reject silly quantum parameters
2021-09-22 12:26:45 +02:00
sch_fq.c
net: fq: add missing attribute validation for orphan mask
2020-03-18 07:17:45 +01:00
sch_generic.c
net: Fix data-races around weight_p and dev_weight_[rt]x_bias.
2022-09-05 10:27:41 +02:00
sch_gred.c
net: sched: validate stab values
2021-03-30 14:35:25 +02:00
sch_hfsc.c
netlink: make validation more configurable for future strictness
2019-04-27 17:07:21 -04:00
sch_hhf.c
net/flow_dissector: switch to siphash
2019-10-23 20:13:22 -07:00
sch_htb.c
net: sched: sch_htb: don't call qdisc_put() while holding tree lock
2019-09-27 12:13:55 +02:00
sch_ingress.c
net: flow_offload: rename TCF_BLOCK_BINDER_TYPE_* to FLOW_BLOCK_BINDER_TYPE_*
2019-07-09 14:38:50 -07:00
sch_mq.c
net: sched: update default qdisc visibility after Tx queue cnt changes
2021-11-17 09:48:28 +01:00
sch_mqprio.c
net: sched: update default qdisc visibility after Tx queue cnt changes
2021-11-17 09:48:28 +01:00
sch_multiq.c
net: sched: fix tc -s class show no bstats on class with nolock subqueues
2019-12-04 22:30:54 +01:00
sch_netem.c
net/sched: sch_netem: Fix arithmetic in netem_dump() for 32-bit platforms
2022-06-29 08:58:46 +02:00
sch_pie.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235
2019-06-19 17:09:07 +02:00
sch_plug.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_prio.c
net: sch_prio: When ungrafting, replace with FIFO
2020-01-12 12:21:49 +01:00
sch_qfq.c
sch_qfq: prevent shift-out-of-bounds in qfq_init_qdisc
2022-01-11 15:23:32 +01:00
sch_red.c
net: sched: Fix use after free in red_enqueue()
2022-11-10 17:57:50 +01:00
sch_sfb.c
sch_sfb: Also store skb len before calling child enqueue
2022-09-15 12:04:56 +02:00
sch_sfq.c
net: sched: validate stab values
2021-03-30 14:35:25 +02:00
sch_skbprio.c
net_sched: sch_skbprio: add message validation to skbprio_change()
2020-05-14 07:58:21 +02:00
sch_taprio.c
net/sched: taprio: make qdisc_leaf() see the per-netdev-queue pfifo child qdiscs
2022-09-28 11:04:07 +02:00
sch_tbf.c
net: sched: tbf: don't call qdisc_put() while holding tree lock
2022-09-15 12:04:50 +02:00
sch_teql.c
net: sched: sch_teql: fix null-pointer dereference
2021-04-14 08:24:12 +02:00