From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jamal Hadi Salim <jhs@mojatatu.com>,
Jiri Pirko <jiri@resnulli.us>,
Cong Wang <xiyou.wangcong@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
itugrok@yahoo.com
Subject: [PATCH 4.19 04/57] net_sched: fix a NULL pointer deref in ipt action
Date: Sun, 8 Sep 2019 13:41:28 +0100 [thread overview]
Message-ID: <20190908121127.430691416@linuxfoundation.org> (raw)
In-Reply-To: <20190908121125.608195329@linuxfoundation.org>
From: Cong Wang <xiyou.wangcong@gmail.com>
[ Upstream commit 981471bd3abf4d572097645d765391533aac327d ]
The net pointer in struct xt_tgdtor_param is not explicitly
initialized therefore is still NULL when dereferencing it.
So we have to find a way to pass the correct net pointer to
ipt_destroy_target().
The best way I find is just saving the net pointer inside the per
netns struct tcf_idrinfo, which could make this patch smaller.
Fixes: 0c66dc1ea3f0 ("netfilter: conntrack: register hooks in netns when needed by ruleset")
Reported-and-tested-by: itugrok@yahoo.com
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/act_api.h | 4 +++-
net/sched/act_bpf.c | 2 +-
net/sched/act_connmark.c | 2 +-
net/sched/act_csum.c | 2 +-
net/sched/act_gact.c | 2 +-
net/sched/act_ife.c | 2 +-
net/sched/act_ipt.c | 11 ++++++-----
net/sched/act_mirred.c | 2 +-
net/sched/act_nat.c | 2 +-
net/sched/act_pedit.c | 2 +-
net/sched/act_police.c | 2 +-
net/sched/act_sample.c | 2 +-
net/sched/act_simple.c | 2 +-
net/sched/act_skbedit.c | 2 +-
net/sched/act_skbmod.c | 2 +-
net/sched/act_tunnel_key.c | 2 +-
net/sched/act_vlan.c | 2 +-
17 files changed, 24 insertions(+), 21 deletions(-)
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -15,6 +15,7 @@
struct tcf_idrinfo {
spinlock_t lock;
struct idr action_idr;
+ struct net *net;
};
struct tc_action_ops;
@@ -107,7 +108,7 @@ struct tc_action_net {
};
static inline
-int tc_action_net_init(struct tc_action_net *tn,
+int tc_action_net_init(struct net *net, struct tc_action_net *tn,
const struct tc_action_ops *ops)
{
int err = 0;
@@ -116,6 +117,7 @@ int tc_action_net_init(struct tc_action_
if (!tn->idrinfo)
return -ENOMEM;
tn->ops = ops;
+ tn->idrinfo->net = net;
spin_lock_init(&tn->idrinfo->lock);
idr_init(&tn->idrinfo->action_idr);
return err;
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -413,7 +413,7 @@ static __net_init int bpf_init_net(struc
{
struct tc_action_net *tn = net_generic(net, bpf_net_id);
- return tc_action_net_init(tn, &act_bpf_ops);
+ return tc_action_net_init(net, tn, &act_bpf_ops);
}
static void __net_exit bpf_exit_net(struct list_head *net_list)
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -215,7 +215,7 @@ static __net_init int connmark_init_net(
{
struct tc_action_net *tn = net_generic(net, connmark_net_id);
- return tc_action_net_init(tn, &act_connmark_ops);
+ return tc_action_net_init(net, tn, &act_connmark_ops);
}
static void __net_exit connmark_exit_net(struct list_head *net_list)
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -678,7 +678,7 @@ static __net_init int csum_init_net(stru
{
struct tc_action_net *tn = net_generic(net, csum_net_id);
- return tc_action_net_init(tn, &act_csum_ops);
+ return tc_action_net_init(net, tn, &act_csum_ops);
}
static void __net_exit csum_exit_net(struct list_head *net_list)
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -263,7 +263,7 @@ static __net_init int gact_init_net(stru
{
struct tc_action_net *tn = net_generic(net, gact_net_id);
- return tc_action_net_init(tn, &act_gact_ops);
+ return tc_action_net_init(net, tn, &act_gact_ops);
}
static void __net_exit gact_exit_net(struct list_head *net_list)
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -887,7 +887,7 @@ static __net_init int ife_init_net(struc
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
- return tc_action_net_init(tn, &act_ife_ops);
+ return tc_action_net_init(net, tn, &act_ife_ops);
}
static void __net_exit ife_exit_net(struct list_head *net_list)
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -65,12 +65,13 @@ static int ipt_init_target(struct net *n
return 0;
}
-static void ipt_destroy_target(struct xt_entry_target *t)
+static void ipt_destroy_target(struct xt_entry_target *t, struct net *net)
{
struct xt_tgdtor_param par = {
.target = t->u.kernel.target,
.targinfo = t->data,
.family = NFPROTO_IPV4,
+ .net = net,
};
if (par.target->destroy != NULL)
par.target->destroy(&par);
@@ -82,7 +83,7 @@ static void tcf_ipt_release(struct tc_ac
struct tcf_ipt *ipt = to_ipt(a);
if (ipt->tcfi_t) {
- ipt_destroy_target(ipt->tcfi_t);
+ ipt_destroy_target(ipt->tcfi_t, a->idrinfo->net);
kfree(ipt->tcfi_t);
}
kfree(ipt->tcfi_tname);
@@ -182,7 +183,7 @@ static int __tcf_ipt_init(struct net *ne
spin_lock_bh(&ipt->tcf_lock);
if (ret != ACT_P_CREATED) {
- ipt_destroy_target(ipt->tcfi_t);
+ ipt_destroy_target(ipt->tcfi_t, net);
kfree(ipt->tcfi_tname);
kfree(ipt->tcfi_t);
}
@@ -353,7 +354,7 @@ static __net_init int ipt_init_net(struc
{
struct tc_action_net *tn = net_generic(net, ipt_net_id);
- return tc_action_net_init(tn, &act_ipt_ops);
+ return tc_action_net_init(net, tn, &act_ipt_ops);
}
static void __net_exit ipt_exit_net(struct list_head *net_list)
@@ -403,7 +404,7 @@ static __net_init int xt_init_net(struct
{
struct tc_action_net *tn = net_generic(net, xt_net_id);
- return tc_action_net_init(tn, &act_xt_ops);
+ return tc_action_net_init(net, tn, &act_xt_ops);
}
static void __net_exit xt_exit_net(struct list_head *net_list)
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -419,7 +419,7 @@ static __net_init int mirred_init_net(st
{
struct tc_action_net *tn = net_generic(net, mirred_net_id);
- return tc_action_net_init(tn, &act_mirred_ops);
+ return tc_action_net_init(net, tn, &act_mirred_ops);
}
static void __net_exit mirred_exit_net(struct list_head *net_list)
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -317,7 +317,7 @@ static __net_init int nat_init_net(struc
{
struct tc_action_net *tn = net_generic(net, nat_net_id);
- return tc_action_net_init(tn, &act_nat_ops);
+ return tc_action_net_init(net, tn, &act_nat_ops);
}
static void __net_exit nat_exit_net(struct list_head *net_list)
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -488,7 +488,7 @@ static __net_init int pedit_init_net(str
{
struct tc_action_net *tn = net_generic(net, pedit_net_id);
- return tc_action_net_init(tn, &act_pedit_ops);
+ return tc_action_net_init(net, tn, &act_pedit_ops);
}
static void __net_exit pedit_exit_net(struct list_head *net_list)
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -342,7 +342,7 @@ static __net_init int police_init_net(st
{
struct tc_action_net *tn = net_generic(net, police_net_id);
- return tc_action_net_init(tn, &act_police_ops);
+ return tc_action_net_init(net, tn, &act_police_ops);
}
static void __net_exit police_exit_net(struct list_head *net_list)
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -258,7 +258,7 @@ static __net_init int sample_init_net(st
{
struct tc_action_net *tn = net_generic(net, sample_net_id);
- return tc_action_net_init(tn, &act_sample_ops);
+ return tc_action_net_init(net, tn, &act_sample_ops);
}
static void __net_exit sample_exit_net(struct list_head *net_list)
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -215,7 +215,7 @@ static __net_init int simp_init_net(stru
{
struct tc_action_net *tn = net_generic(net, simp_net_id);
- return tc_action_net_init(tn, &act_simp_ops);
+ return tc_action_net_init(net, tn, &act_simp_ops);
}
static void __net_exit simp_exit_net(struct list_head *net_list)
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -316,7 +316,7 @@ static __net_init int skbedit_init_net(s
{
struct tc_action_net *tn = net_generic(net, skbedit_net_id);
- return tc_action_net_init(tn, &act_skbedit_ops);
+ return tc_action_net_init(net, tn, &act_skbedit_ops);
}
static void __net_exit skbedit_exit_net(struct list_head *net_list)
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -277,7 +277,7 @@ static __net_init int skbmod_init_net(st
{
struct tc_action_net *tn = net_generic(net, skbmod_net_id);
- return tc_action_net_init(tn, &act_skbmod_ops);
+ return tc_action_net_init(net, tn, &act_skbmod_ops);
}
static void __net_exit skbmod_exit_net(struct list_head *net_list)
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -579,7 +579,7 @@ static __net_init int tunnel_key_init_ne
{
struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
- return tc_action_net_init(tn, &act_tunnel_key_ops);
+ return tc_action_net_init(net, tn, &act_tunnel_key_ops);
}
static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -324,7 +324,7 @@ static __net_init int vlan_init_net(stru
{
struct tc_action_net *tn = net_generic(net, vlan_net_id);
- return tc_action_net_init(tn, &act_vlan_ops);
+ return tc_action_net_init(net, tn, &act_vlan_ops);
}
static void __net_exit vlan_exit_net(struct list_head *net_list)
next prev parent reply other threads:[~2019-09-08 12:57 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-08 12:41 [PATCH 4.19 00/57] 4.19.72-stable review Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 01/57] mld: fix memory leak in mld_del_delrec() Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 02/57] net: fix skb use after free in netpoll Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 03/57] net: sched: act_sample: fix psample group handling on overwrite Greg Kroah-Hartman
2019-09-08 12:41 ` Greg Kroah-Hartman [this message]
2019-09-08 12:41 ` [PATCH 4.19 05/57] net: stmmac: dwmac-rk: Dont fail if phy regulator is absent Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 06/57] tcp: inherit timestamp on mtu probe Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 07/57] tcp: remove empty skb from write queue in error cases Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 08/57] net/rds: Fix info leak in rds6_inc_info_copy() Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 09/57] x86/boot: Preserve boot_params.secure_boot from sanitizing Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 10/57] spi: bcm2835aux: unifying code between polling and interrupt driven code Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 11/57] spi: bcm2835aux: remove dangerous uncontrolled read of fifo Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 12/57] spi: bcm2835aux: fix corruptions for longer spi transfers Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 13/57] net: tundra: tsi108: use spin_lock_irqsave instead of spin_lock_irq in IRQ context Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 14/57] netfilter: nf_tables: use-after-free in failing rule with bound set Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 15/57] tools: bpftool: fix error message (prog -> object) Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 16/57] hv_netvsc: Fix a warning of suspicious RCU usage Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 17/57] net: tc35815: Explicitly check NET_IP_ALIGN is not zero in tc35815_rx Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 18/57] Bluetooth: btqca: Add a short delay before downloading the NVM Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 19/57] Bluetooth: hidp: Let hidp_send_message return number of queued bytes Greg Kroah-Hartman
2019-09-09 12:15 ` Pavel Machek
2019-09-09 13:00 ` Fabian Henneke
2019-09-09 22:59 ` Greg Kroah-Hartman
2019-09-10 6:27 ` Fabian Henneke
2019-09-10 9:29 ` Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 20/57] ibmveth: Convert multicast list size for little-endian system Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 21/57] gpio: Fix build error of function redefinition Greg Kroah-Hartman
2019-09-09 12:23 ` Pavel Machek
2019-09-08 12:41 ` [PATCH 4.19 22/57] netfilter: nft_flow_offload: skip tcp rst and fin packets Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 23/57] drm/mediatek: use correct device to import PRIME buffers Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 24/57] drm/mediatek: set DMA max segment size Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 25/57] scsi: qla2xxx: Fix gnl.l memory leak on adapter init failure Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 26/57] scsi: target: tcmu: avoid use-after-free after command timeout Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 27/57] cxgb4: fix a memory leak bug Greg Kroah-Hartman
2019-09-09 13:06 ` Pavel Machek
2019-09-08 12:41 ` [PATCH 4.19 28/57] liquidio: add cleanup in octeon_setup_iq() Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 29/57] net: myri10ge: fix memory leaks Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 30/57] lan78xx: Fix " Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 31/57] vfs: fix page locking deadlocks when deduping files Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 32/57] cx82310_eth: fix a memory leak bug Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 33/57] net: kalmia: fix memory leaks Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 34/57] ibmvnic: Unmap DMA address of TX descriptor buffers after use Greg Kroah-Hartman
2019-09-08 12:41 ` [PATCH 4.19 35/57] net: cavium: fix driver name Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 36/57] wimax/i2400m: fix a memory leak bug Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 37/57] ravb: Fix use-after-free ravb_tstamp_skb Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 38/57] kprobes: Fix potential deadlock in kprobe_optimizer() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 39/57] HID: cp2112: prevent sleeping function called from invalid context Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 40/57] x86/boot/compressed/64: Fix boot on machines with broken E820 table Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 41/57] Input: hyperv-keyboard: Use in-place iterator API in the channel callback Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 42/57] Tools: hv: kvp: eliminate may be used uninitialized warning Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 43/57] nvme-multipath: fix possible I/O hang when paths are updated Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 44/57] IB/mlx4: Fix memory leaks Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 45/57] infiniband: hfi1: fix a memory leak bug Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 46/57] infiniband: hfi1: fix memory leaks Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 47/57] selftests: kvm: fix state save/load on processors without XSAVE Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 48/57] selftests/kvm: make platform_info_test pass on AMD Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 49/57] ceph: fix buffer free while holding i_ceph_lock in __ceph_setxattr() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 50/57] ceph: fix buffer free while holding i_ceph_lock in __ceph_build_xattrs_blob() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 51/57] ceph: fix buffer free while holding i_ceph_lock in fill_inode() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 52/57] KVM: arm/arm64: Only skip MMIO insn once Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 53/57] afs: Fix leak in afs_lookup_cell_rcu() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 54/57] KVM: arm/arm64: VGIC: Properly initialise private IRQ affinity Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 55/57] x86/boot/compressed/64: Fix missing initialization in find_trampoline_placement() Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 56/57] libceph: allow ceph_buffer_put() to receive a NULL ceph_buffer Greg Kroah-Hartman
2019-09-08 12:42 ` [PATCH 4.19 57/57] Revert "x86/apic: Include the LDR when clearing out APIC registers" Greg Kroah-Hartman
2019-09-09 3:12 ` [PATCH 4.19 00/57] 4.19.72-stable review Naresh Kamboju
2019-09-09 19:39 ` Guenter Roeck
2019-09-10 9:20 ` Jon Hunter
2019-09-10 9:27 ` Jack Wang
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