Eric Dumazet 27880b0b0d net/sched: act_ife: avoid possible NULL deref ... tcf_ife_encode() must make sure ife_encode() does not return NULL. syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:ife_tlv_meta_encode+0x41/0xa0 net/ife/ife.c:166 CPU: 3 UID: 0 PID: 8990 Comm: syz.0.696 Not tainted syzkaller #0 PREEMPT(full) Call Trace: <TASK> ife_encode_meta_u32+0x153/0x180 net/sched/act_ife.c:101 tcf_ife_encode net/sched/act_ife.c:841 [inline] tcf_ife_act+0x1022/0x1de0 net/sched/act_ife.c:877 tc_act include/net/tc_wrapper.h:130 [inline] tcf_action_exec+0x1c0/0xa20 net/sched/act_api.c:1152 tcf_exts_exec include/net/pkt_cls.h:349 [inline] mall_classify+0x1a0/0x2a0 net/sched/cls_matchall.c:42 tc_classify include/net/tc_wrapper.h:197 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x7f2/0x1380 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0xe0/0x510 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x45/0x250 net/core/dev.c:4147 __dev_xmit_skb net/core/dev.c:4262 [inline] __dev_queue_xmit+0x2998/0x46c0 net/core/dev.c:4798 Fixes: 295a6e06d2 ("net/sched: act_ife: Change to use ife module") Reported-by: syzbot+5cf914f193dffde3bd3c@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/6970d61d.050a0220.706b.0010.GAE@google.com/T/#u Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yotam Gigi <yotam.gi@gmail.com> Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com> Link: https://patch.msgid.link/20260121133724.3400020-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2026-01-22 08:01:44 -08:00
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6lowpan
9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bpf
bridge
caif
can
ceph
core
dcb
devlink
dns_resolver
dsa
ethernet
ethtool
handshake
hsr
ieee802154
ife
ipv4
ipv6
iucv
kcm
key
l2tp
l3mdev
lapb
llc
mac80211
mac802154
mctp
mpls
mptcp
ncsi
netfilter
netlabel
netlink
netrom
nfc
nsh
openvswitch	net: openvswitch: fix data race in ovs_vport_get_upcall_stats	2026-01-22 12:55:22 +01:00
packet
phonet
psample
psp
qrtr
rds
rfkill
rose
rxrpc
sched	net/sched: act_ife: avoid possible NULL deref	2026-01-22 08:01:44 -08:00
sctp
shaper
smc
strparser
sunrpc
switchdev
tipc
tls
unix
vmw_vsock	vsock/virtio: cap TX credit to local buffer size	2026-01-22 15:41:33 +01:00
wireless
x25
xdp
xfrm
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c
sysctl_net.c