Cong Wang 9cd3fd2054 net_sched: reject TCF_EM_SIMPLE case for complex ematch module ... 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>		2022-12-19 09:43:18 +00:00
..
act_api.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_bpf.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_connmark.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_csum.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_ct.c	net: move the nat function to nf_nat_ovs for ovs and tc	2022-12-12 10:14:03 +00:00
act_ctinfo.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_gact.c	Networking changes for 6.2.	2022-12-13 15:47:48 -08:00
act_gate.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_ife.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_ipt.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_meta_mark.c
act_meta_skbprio.c
act_meta_skbtcindex.c
act_mirred.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_mpls.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_nat.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_pedit.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_police.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_sample.c	Networking changes for 6.2.	2022-12-13 15:47:48 -08:00
act_simple.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_skbedit.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_skbmod.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_tunnel_key.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
act_vlan.c	net/sched: avoid indirect act functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_api.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_basic.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_bpf.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_cgroup.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_flow.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_flower.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_fw.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_matchall.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_route.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_rsvp6.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_rsvp.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_rsvp.h	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_tcindex.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
cls_u32.c	net/sched: avoid indirect classify functions on retpoline kernels	2022-12-09 09:18:07 +00:00
em_canid.c	net: sched: kerneldoc fixes	2020-07-13 17:20:40 -07:00
em_cmp.c	net: sched: fix misspellings using misspell-fixer tool	2020-11-10 17:00:28 -08:00
em_ipset.c	sched: consistently handle layer3 header accesses in the presence of VLANs	2020-07-03 14:34:53 -07:00
em_ipt.c	sched: consistently handle layer3 header accesses in the presence of VLANs	2020-07-03 14:34:53 -07:00
em_meta.c	net_sched: em_meta: add READ_ONCE() in var_sk_bound_if()	2022-05-16 10:31:06 +01:00
em_nbyte.c	net: sched: Return the correct errno code	2021-02-06 11:15:28 -08:00
em_text.c
em_u32.c
ematch.c	net_sched: reject TCF_EM_SIMPLE case for complex ematch module	2022-12-19 09:43:18 +00:00
Kconfig	net: move the nat function to nf_nat_ovs for ovs and tc	2022-12-12 10:14:03 +00:00
Makefile	net/sched: sch_frag: add generic packet fragment support.	2020-11-27 14:36:02 -08:00
sch_api.c	net/sched: add retpoline wrapper for tc	2022-12-09 09:18:07 +00:00
sch_atm.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_blackhole.c	Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"	2020-07-16 16:48:34 -07:00
sch_cake.c	Networking fixes for 6.1-rc2, including fixes from netfilter	2022-10-20 17:24:59 -07:00
sch_cbq.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_cbs.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_choke.c	treewide: use get_random_u32_below() instead of deprecated function	2022-11-18 02:15:15 +01:00
sch_codel.c	net: sched: remove redundant NULL check in change hook function	2022-09-01 08:06:45 +02:00
sch_drr.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_dsmark.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_etf.c	net: sched: etf: remove true check in etf_enable_offload()	2022-09-01 20:08:32 -07:00
sch_ets.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_fifo.c	net_sched: fix NULL deref in fifo_set_limit()	2021-10-01 14:59:10 -07:00
sch_fq_codel.c	Revert "net: sched: fq_codel: remove redundant resource cleanup in fq_codel_init()"	2022-10-19 13:47:09 +01:00
sch_fq_pie.c	net: sched: remove redundant NULL check in change hook function	2022-09-01 08:06:45 +02:00
sch_fq.c	net: sched: remove redundant NULL check in change hook function	2022-09-01 08:06:45 +02:00
sch_frag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-12-31 14:35:40 +00:00
sch_generic.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-09-01 12:58:02 -07:00
sch_gred.c	net: sched: gred: remove NULL check before free table->tab in gred_destroy()	2022-09-01 13:32:26 +02:00
sch_hfsc.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_hhf.c	net: sched: remove redundant NULL check in change hook function	2022-09-01 08:06:45 +02:00
sch_htb.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_ingress.c
sch_mq.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_mqprio.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_multiq.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_netem.c	treewide: use get_random_u32_below() instead of deprecated function	2022-11-18 02:15:15 +01:00
sch_pie.c	treewide: use get_random_bytes() when possible	2022-10-11 17:42:58 -06:00
sch_plug.c	net: sched: remove redundant NULL check in change hook function	2022-09-01 08:06:45 +02:00
sch_prio.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_qfq.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_red.c	net: sched: Fix use after free in red_enqueue()	2022-10-31 11:55:39 +00:00
sch_sfb.c	Networking fixes for 6.1-rc2, including fixes from netfilter	2022-10-20 17:24:59 -07:00
sch_sfq.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_skbprio.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_taprio.c	Revert "net/sched: taprio: make qdisc_leaf() see the per-netdev-queue pfifo child qdiscs"	2022-10-05 20:32:15 -07:00
sch_tbf.c	net/sched: use tc_qdisc_stats_dump() in qdisc	2022-09-22 17:34:10 -07:00
sch_teql.c	net: sched: delete duplicate cleanup of backlog and qlen	2022-08-25 15:10:17 +02:00